Odontoglossum
(from odous, odontos, a tooth, and glossa, a tongue; referring to the tooth-like processes on the lip). Including Mesospinidium (some of the plants grown in gardens under the generic name of Mesospinidium, belong to the genus Cochlioda). ORD. Orchideae. This genus comprises, according to some authorities, over one hundred species of handsome, stove Orchids, inhabiting the Andes of tropical America, from Bolivia as far as Mexico. Flowers with spreading, free sepals; petals nearly equal; lip with its base parallel with the column, and its limb deflexed and generally crested in various ways; column usually long, narrow at the base, and eared, or winged, at the summit; pollen masses two, with a narrow caudicle attached to an oval gland. Leaves in nearly all the species ensiform, usually sub-coriaceous in texture, linear-lanceolate or simply lanceolate, complicate at base, tapering to a more or less acute point. This genus is distinguished from Oncidium by the column being long and narrow, or, at any rate, not swollen, at the base, and by the base of the lip being always parallel with the face of the column. For purposes of cultivation, the Odontoglossums may be divided into two groups, comprising (1) all those species which require the treatment of an intermediate house, i.e., a temperature not lower than 50deg. to 55deg. in winter, and correspondingly high in summer; and (2) those which will thrive in a cool house, from which frost only is excluded, or, for safety, say, where the temperature will not fall below 40deg. Many of these plants, as well as other orchids, are found at very high elevations, where, at some seasons, they are visited by slight frosts and snow. Recently, many species of Odontoglossum have been successfully cultivated out of doors under the shade of trees, and where the atmosphere about them could not become too parched. The plants are hung up, either in baskets or on rafts, exactly as when cultivated under glass, and are syringed frequently in dry weather; they are not injured, but, on the contrary, much benefited, by frequent showers of rain. It is probable that, as these and other Orchids become cheaper, they will be cultivated at much less cost than at present, and no doubt outdoor cultivation, for at least a portion of the year, will be adopted for a great number of those from cool and temperate climes. Even those from warmer regions would most probably be improved by open-air cultivation during our hot season. For the species requiring warm-house treatment, and which are distinguished in the subjoined list by a dagger (dagger), the following points must be attended to. When making their growth, which is during the summer, they require plenty of water, a position near the glass, where they would be shaded only from bright sunshine, and a moist atmosphere, with plenty of fresh air about them, care being taken that the temperature does not fall too low through the latter. During the winter, they should be kept almost dry, and, in spring, quite dry till the flower spikes appear, when water should be applied liberally, and continued till the summer's growth is again completed. The species grown in a cool house do not, as a rule, require a resting season similar to the above, but should be kept uniformly moist at the roots all the year round; indeed, many of them grow freely all through the winter. None of them like direct sunshine in summer, but in winter they enjoy all the sunlight possible. It is, therefore, a good plan to place the plants in a house with a northerly aspect for the summer, whilst, on the return of the cold, dull weather of winter, they may, with advantage, be removed into a house with an aspect due south. In the United States, the Odontoglossums invariably make two growths a year, the one in summer, and the other in winter, the latter being favoured by the clear and bright light which prevails in North America in winter. It should be remembered that, whilst very few orchids--certainly no Odontoglossums--enjoy excessive sunlight, they are, nevertheless, much healthier and more floriferous when grown in a house where they can obtain all the light possible, short of the fierce sunlight of our summers. Generally, Odontoglossums require a moist atmosphere at all times, and, after a bright day, are much invigorated by a gentle dewing overhead by means of a syringe. A few of the species, such as O. Cervantesii, O. Londesboroughianum, O. Rossii Dawsonianum, &c., may be satisfactorily grown when fastened on to a block, formed of fern stem; but Odontoglossums succeed best when grown in baskets or in pots, using a mixture of peat (broken into lumps the size of walnuts) and sphagnum, with a few lumps of charcoal and a little sand scattered through it. Pots should be half-filled with drainage, and baskets covered at the bottom with a large crock, or a few pieces of charcoal. Round the top of the soil a little fresh sphagnum should be placed; it will soon grow, and cover the whole surface with a fresh green, and prevent excessive evaporation in hot weather. To establish newly-imported Odontoglossums, they should be first carefully examined, and all dead bulbs, scales, and roots cut away; they may then be rinsed in warm water, and allowed to dry, before placing them in a little soil. The pots used should be as small as possible, all that is necessary being room for the base of the plant to stand in each with a little peat and sphagnum about it. Very little soil must be used, the pot being filled almost full of crocks; unless this precaution is taken, there is danger of the weakened plants being injured, and perhaps killed, by the water which would be held about them by a large body of soil. They should be placed in a shaded part of the house where they are to be grown when established. It is not wise to attempt to force the plants into growth by subjecting them to a high temperature, as the effect of this, although promising at first, is to weaken the whole plant by causing it to start into growth before it has recovered from the injuries caused by importation. All the Odontoglossums are propagated by division, none having, as yet, been raised from seeds in this country. Mr. H. Veitch, in his paper on the "Hybridisation of Orchids," read at the Orchid Conference, on May 13th, 1885, says that numerous crosses between various species, both Mexican and New Grenadan, have been effected, and capsules, with apparently good seed, have been produced; but, with the utmost care that could be bestowed, no progeny has yet been raised.
The plants which are, perhaps, best known under the names of O. Phalaenopsis, O. Roezlii, O. vexillarium, &c., but which, in this work, are referred to the genus Miltonia, will not hybridise--or, at any rate, no one, up to the present time, has succeeded in making them do so--with any of the true Odontoglots. Certainly, it appears to favour the view here taken of the generic affinities of the plants in question, when, on the authority of Messrs. Veitch and Sons, we are enabled to state that, with other Miltonias, they cross and intercross readily. Through some mistake or other, Mr. Bentham, in the "Genera Plantarum," asserts the contrary.
A considerable number of Odontoglots, which are generally accorded specific rank, are here reduced to varieties. In this we have been guided, to a great extent, by Messrs. Veitch and Sons, who have made a special study of the genus, and carefully compared, as they flowered, the numerous specimens of each so-called species in their magnificent collection. We are indebted to the firm in question for permission to peruse the manuscript of their yet unpublished monograph.
O. acuminatum (taper-pointed). A synonym of O. Rossii.
O. Alexandrae (Alexandra's). A synonym of O. crispum.
O. A. Bowmani (Bowman's). A synonym of O. crispum guttatum.
O. anceps (two-edged). A synonym of O. maculatum.
O. Andersonianum (Anderson's). A variety of O. crispum.
O. anthoxanthum (yellow-flowered). fl. sulphur-coloured, small, growing in a flexuous raceme; lip sub-cordate at the base, three-lobed. Peru, 1869.
O. aspersum (sprinkled). A variety of O. Rossii.
O. bictonense (Bicton).*dagger fl. about 1in. across, varying much in colour, most frequently yellowish-green, transversely barred with brownish-purple, whilst the lip is lilac, shaded with violet, or sometimes nearly white; spikes about 2ft. high, bearing from twenty to thirty flowers. April. Pseudo-bulbs and leaves bright green. Guatemala, 1835. This plant was formerly a great favourite, and, moreover, was the first Odontoglot which reached England in a living state; but, since the introduction of so many fine kinds, it has gone somewhat out of fashion. It is, however. remarkably free in its flowering and habit of growth. (B. M. 3812, under name of Zygopetalum africanum; B. O. 18; B. R. 1840, 66.) This species has many varieties, of which the two following are by far the best: album, in which the lip is pure white; and superbum, having sepals and petals heavily blotched with rich crimson-brown, and a deep coloured rosy-purple lip.
O. blandum (fair).* fl. yellowish-white, beautifully spotted and freckled with maroon-crimson; sepals and petals narrow and acuminated; lip with an ovate-acuminate, crisped blade. Columbia, 1870. A handsome plant, somewhat resembling O. naevium, but with the blade of the lip much more expanded. (B. O. 28.)
O. Bluntii (Blunt's). A synonym of O. crispum.
O. brevifolium (short-leaved), of gardens. A synonym of O. coronarium.
O. cariniferum (keel-bearing).dagger fl., sepals and petals oblong-lanceolate, greenish outside, and furnished on the middle line with keels; inside they are chestnut-brown, bordered with greenish-yellow or yellow; lip with the claw of violet colour, the cordate-acute anterior part being white; panicle large, branched. l. cuneate-oblong, ligulate. Pseudo-bulb oblong, two-leaved. Central America, 1855. SYN. O. hastilabium fuscatum. (B. M. 4919; B. O. 10.) O. Cervantesii (Cervantes').*dagger fl. from 1in. to 2in. across; sepals and petals rosy-lilac, barred at the base with crimson-brown; lip cordate or triangular, white or lilac; spikes 6in. high, three to five-flowered. March and April. l. lanceolate, solitary. Pseudo-bulbs angular. Oaxaca, 1845. A pretty, dwarf-growing species. SYN. O. membranaceum. (B. R. 1845, 36; L. & P. F. G. i. 15.)
O. C. decorum (becoming). A fine variety, with larger flowers and more brightly-coloured markings than the type. (F. M. n. s. 254.)
O. C. majus (larger). A good variety, with larger and more brightly-spotted flowers than the type. Mexico, 1879.
O. C. punctatissimum (much-spotted). A handsome variety, having flowers covered with neat, purplish spots. 1878. (B. O. 10.)
O. cirrhosum (tendrilled).*dagger fl. milk-white, with deep purplish-violet dark spots on sepals, petals, and the anterior, inferior part of lip, the basilar part of which is whitish-yellow at both sides, and with purplish-violet radiating lines; sepals lanceolate, ending in bristles; petals much broader; lip cuneate, dilatates going out in two blunt, wavy angles, the upper part bearing an open sheath around the column, the anterior expanded; peduncles racemose or panicled, many-flowered, l. linear-ligulate. Pseudo-bulbs ligulate, ancipitate. Ecuador, 1876. See fig 713, for which we are indebted to Messrs. Veitch and Sons. (B. M. 6317; G. C. n. s., v. 503.)
O. c. gemmatum (jewelled). A good variety, with groups of mauve or purple stains at the base of the sepals and petals.
O. c. Hrubyanum (Hruby's). A variety having flowers without spots, or with but few traces of them.
O. c. Klabochianum (Klaboch's). A variety with much larger flowers than the type.
O. citrosmum (Lemon-scented).*dagger fl., sepals and petals pure white, delicately lemon-scented; lip purple, crescent-shaped; racemes pendulous, bearing from fifteen to thirty flowers. May. l. thick. Pseudo bulbs smooth, shining light green. Guatemala, 1840. SYN. O. pendulum (B. O. 6). (B. R. xxix. 3; F. d. S. 633.)
O. c. album (white). fl. white, except the crest on the claw of the lip.
O. c. punctatum (dotted). fl. pale rose; sepals and petals dotted with purple.
O. c. roseum (rose). fl. having the blade of the lip deep rose.
O. constrictum (contracted). fl., sepals and petals bright yellow, with orange-brown blotches and bars; lip pandurate, white, tipped with yellow, and bearing two conspicuous rose-coloured spots near the centre; panicles large, branched, many-flowered. l. elongate, linear-lanceolate. Pseudo-bulbs ovoid, compressed, ribbed, dark green. Caraccas, 1843. A pretty, free-flowering plant. (B. M. 5736.)
O. c. Sanderianum (Sander's).* fl., sepals and petals light ochre, with brown marks and stripes, lanceolate, acuminate; lip cordate at base, with two short, upright lobes; blade large, sub-pandurate, acute, wavy, white, tinted with sulphur, and having a large purple-crimson mark between the calli, and some spots in front. Columbia (?), 1881. A handsome, Hawthorn-scented variety, superior to the type.
O. Coradinei (Coradine's). A variety of O. Lindleyanum. O. cordatum (heart-shape-lipped). fl., sepals and petals yellow, blotched and barred with deep rich chocolate-brown, very much elongated, and curiously wavy; lip large, heart-shaped, varying somewhat in its markings, ground colour white, blotched with lilac and purplish-red, or sometimes with pale yellow and crimson; scape 1ft. or more in height, stiff, erect, simple or branched, few or many-flowered. Late spring. l. bright green, with yellow lines. Pseudo-bulbs oblong, generally one-leaved. Guatemala and Mexico, 1837. A free-flowering and easily-grown species, though less striking than many of its congeners. (B. M. 4878, under name of O. maculatum; B. O. 25; R. G. 356.)
O. c. sulphureum (sulphur-coloured). fl., sepals sulphur-coloured; petals and lip white, with sulphur tips and blotches. Mexico, 1880. A highly curious variety.
O. coronarium (crowned).* fl., sepals and petals reddish-brown, edged with yellow; lip bright golden-yellow; spike erect, 1ft. or more in height, bearing from thirty to forty blossoms. Pseudo-bulbs large, wrinkled, flat, produced at intervals along a creeping rhizome, bearing a short, oblong leaf at the apex. Peru, 1868. (B. O. 27; G. C. n. s., xii. 301; W. O. A. i. 27, under name of O. brevifolium.)
O. c. Dayanum (Day's). fl., petals yellow, with brown marbling; lip with two conical acute warts on each side of the crest.
O. crinitum (hairy). fl. striped and blotched, racemose; sepals and petals lanceolate, acuminate; lip covered with filiform processes. Columbia, 1882. A very distinct species. (R. X. O. 191, 3.) O. crispum (curled).* fl., sepals and petals pure white, ovate or ovate-lanceolate, the petals being much undulated, and often fimbriately toothed; lip oblong-acuminate, yellow, crested towards the base, beautifully crisped at the margin, and more or less spotted towards the front with blotches of reddish-brown; racemes pendulous, usually from six to twelve-flowered. New Grenada. This is one of the gems of the cool orchid-house, since, by a little management, its charming flowers may be had all the year round. It is a plant which varies to an almost endless extent, no two, of the many thousands imported, being, perhaps, exactly alike, and very considerable difference in size, colouring, or crispness in the flowers constantly presenting itself. See Fig. 715, for which we are indebted to Mr. Wm. Bull. SYNS. O. Alexandra and O. Bluntii (F. d. S. 1652). (B. O. 19.)
O. c. Andersonianum (Anderson's).* fl. milky yellowish-white, with some very broad, cinnamon, longitudinal stripes; sepals and petals ovate-oblong, acute, crisped; lip pandurate, with wavy and toothed margins. Pseudo-bulbs ligulate, pyriform. Columbia, 1868. A very handsome and rare plant. SYN. O. Josephinae (W. O. A. iv. 188). (F. M. n. s. 45; W. O. A. i. 35.)
O. c. A. guttulatum (small-spotted). fl. beautifully marked with small brown spots on the sepals and petals; lip white, with a yellow base and a few brown lines. A pretty sub-variety.
O. c. Chestertonii (Chesterton's). fl., sepals and petals broad, the sepals white, with small reddish-brown transverse blotches; petals white, with two to five red-brown spots; lip red-brown, with a broad, yellowish-white margin.
O. c. fastuosum (proud). fl., odd sepal deep bluish-lilac, with a white border and two large brown-violaceous blotches; lateral sepals white on the inner half, lilac-violet on the outer, blotched brownish-violet towards the base; petals white, with a brownish-violet line at base; lip obovate, very flat; keels yellow. A distinct variety. 1878.
O. c. flaveolum (yellowish). A distinct variety, with yellow flowers, and a very few red spots and lines. Bogota, 1880. (W. O. A. i. 43.) O. c. giganteum (gigantic). fl. white, spotted all over very profusely with reddish-brown, large; spike 3ft. high, branching, and many-flowered. A very fine, but rare, variety.
O. c. guttatum (spotted).* A well-marked variety. To the general features of the typical species, it adds larger flowers, of a pure white ground colour, with a few well-marked spots of a coppery red on each sepal and petal, and the singularly oblong-quadrate appendiculate lip suffused with yellow towards the base, where it is margined with brown spots, terminating in one larger central one, and forming a ring around the disk. New Grenada, 1867. SYN. O. Alexandrae Bowmani (B. M. 5697, under name of O. Alexandrae guttatum; W. O. A. ii. 94.)
O. c. Jenningsianum (Jennings').* fl. cream-white, with many light cinnamon blotches, which are very numerous in the petals; base of lip yellow, with a few cinnamon lines. 1878. A pretty plant, the flowers of which are said to be exceedingly like those of O. c. Ruckerianum, but distinct by their very crisp, wavy nature, and by the basilar callus of the lip. (G. C. n.s., ii. 366.)
O. c. Lehmanni (Lehmann's). fl. usually purple, with a brown tint, numerous; inflorescence branched. l. rather narrow. South America, 1880. A curious plant.
O. c. limbatum (bordered). fl. milk-white; sepals richly marked with lilac; lip with numerous violet spots at the tip, and with yellow lamellae and a few streaks at the base; panicle many-flowered. Columbia, 1870. An interesting orchid. (R. X. O. 183, 2.)
O. c. Mariae (Miss Marie Andre's). A beautiful variety, with pure white flowers, except two red spots at base of lower sepals, a few red streaks on the column, and the callus tinted with yellow. Columbia, 1879. (I. H. n. s. 325.) O. c. Ruckerianum (Rucker's).* fl., ground colour creamy-white; sepals and petals bordered with deep violet, with a few chestnut-brown blotches on their inner surfaces; narrow lip, yellow at the base, with blotches of chestnut-brown. (G. C. 1873, 105.)
O. c. Stevensii (Stevens') fl. white, heavily barred with light brown, large; lip with a clear yellow disk. A grand form. (W. O. A. iii. 127.)
O. c. Trianae (Triana's).* fl. white, flushed, especially on the upper half of the dorsal sepals, with rose, the rosy portion being spotted with carmine, the dorsal sepal bearing a single large rosy spot; 2 1/2in. across, crowded in a dense spike; the lip is large, rounded, and two-lobed at the apex, white, freely spotted with coppery red. Columbia, 1868. A very beautiful variety. (B. M. 5691.)
O. c. Veitchianum (Veitch's).* fl., sepals and petals white, with a zone of mauve and some brown blotches, broad. 1884. A fine form.
O. c. Warneri (Warner's).* fl., sepals white, stained with rose, and spotted with purplish-brown; petals very broad, toothed at the edges, pure white; lip large, white, stained at the base with rich yellow. Columbia, 1869. A splendid form.
O. c. xanthoglossum (yellow-lipped). A variety with a yellow lip, having a few lines and a large lobed blotch of brown. 1883.
Other varieties of crispum are: aureum, Ballantinei, Cooksoni (W. O. A. iii. 118), elegantissimum, Reginae, roseum (F. M. n. s. 269), Roths-childianum, Sanderianum, sulphureum, and virginale.
O. cristatum (crested).* fl., sepals and petals creamy-yellow, varying in intensity in the different forms, banded or spotted with very dark brown or purple, and about 2in. in diameter; lip whitish, spotted with dingy brownish-purple, with a radiating white crest. Pseudo-bulbs somewhat oval, of a light shining green, bearing very narrow leaves of the same hue. Peru. A very desirable species, although not so showy as many others. (I. H. 1870,21).
O. c. Argus (Argus). fl. bright yellow, with purplish speckles and freckles; lip and column white, with purplish markings. (I. H. ser. ii. 21.)
O. c. canaria (canary-coloured). fl., sepals and petals bright clear yellow, each with a single purplish blotch.
O. c. cristatellum (slightly-crested). fl. light yellow, with a few sepia-brown spots; lip short, narrow, nearly oblong-pandurate, apiculate, undulate, anterior part sepia-brown; the front side of column has three violet spots on its base, and some brown lines. Winter. 1878. (W. O. A. 66.)
O. c. Dayanum (Day's). A variety with a rhomboid, apiculate, serrate lip, the crests on its base crossing one another.
O crocidipterum (saffron-winged). fl. deliciously scented like Hawthorn; sepals and petals pale yellow, spotted with brown, from 2in. to 3in. across; lip having a bilobed, white crest, around which is a blotch of clear lemon-yellow; spikes from 1ft. to 1 1/2ft. long, many-flowered. August and September. Pseudo-bulbs compressed and conical, two-leaved. Columbia, 1870. (R. X. O. ii. 192.)
O. Dormanianum (Dorman's).* fl. whitish, with numerous dark spots, and resembling those of O. crocidipterum; base of the lip yellow, sometimes with a few red stripes; tip of the lip with a large blotch. l. very narrow, and short. Pseudo-bulbs elliptical, blunt, two-edged, grooved and wrinkled. 1884. O. Edwardi (Edward Klaboch's). dagger fl. mauve-coloured, with a light purple hue; lip with an ochre-coloured callus; inflorescence many-flowered. Ecuador, 1878. (B. M. 6771.)
O. elegans (elegant).* fl., sepals and petals faint yellowish, with narrow, brown blotches; lip yellowish, with the apical part white, having two long, serrate calli, and two small, acuminate, extrorse, adventitious ones marked with reddish spots. Ecuador, 1879. A natural hybrid, much resembling O. cirrhosum. (Gn. xxiv. 459; W. O. A. iii. 3.)
O. Galeottianum (Galeotti's). fl. white; petals transversely barred with brown at the base; lip with a few streaks of yellow near the base; raceme few-flowered. Mexico, 1870. Allied to O. nebulosum, and very rare in cultivation.
O. gloriosum (glorious). A synonym of O. odoratum.
O. grande (magnificent).* fl. from 4in. to 7in. in diameter; sepals and petals rich glossy orange-yellow, the basal half being transversely banded and blotched with bright chestnut-brown; lip creamy-white, more or less freckled with brown; scapes stout, erect, from four to nine-flowered. Autumn and winter. l. lanceolate, broad, 6in. to 9in. long, dark green. Pseudo-bulbs glaucous, thick, slightly angular, two-leaved. Guatemala, 1839. This is one of the most beautiful, the largest the best known, and the easiest grown of Orchids. (B. M. 3955; B. O. 8; R. G. 1859, 270; W. O. A. ii. 79.)
O. g. splendens (splendid). A rare and beautiful variety, differing from the type in having brown markings and a nearly white lip, with pure purplish bars. 1872.
O. g. Williamsianum (Williams'). This resembles the type, but has shorter, broader, and more obtuse petals; column with uncinate wings. 1881. (W. O. A. 163.) O. Hallii (Hall's).* fl. about 4in. across; sepals and petals pale yellow, with large chocolate-brown patches, and terminating in long points; lip pure white, with a beautifully-fringed margin, spotted and blotched with brown and purple, and stained towards the base with deep yellow; spike many-flowered. l. light green, 1ft. or more long, 2in. broad. Pseudo-bulbs about 3in. high. Ecuador, 1865. (B. M. 6237; B. O. 21; F. M. 1868, 378; I. H. ser. iii. 58.) The variety xanthoglossum is distinguished principally by having a yellow lip. Columbia, 1879.
O. hastilabium (halbert-lipped).* fl. large, 1 1/2in. across, very fragrant, and numerous; sepals and petals soft creamy-white, beautifully streaked with transverse lines of whitish-brown; lip somewhat spear-shaped, white, with a dark rose base; spike 2ft., 3ft., or more high, much branched, and many-flowered. Summer. Pseudo-bulbs thick, pale green, fluted, with rather dark broad leaves. New Grenada, 1843. A strong-growing, handsome species. (B. M. 4272; B. O. 7.)
O. h. fuscatum (brownish). A synonym of O. cariniferum.
O. histrionicum (histrionic). A synonym of O. luteo-purpureum mulus.
O. Holfordianum (Holford's). A synonym of O. luteo-purpureum mulus.
O. Horsmani (Horsman's). fl. light sulphur-colour, with a few cinnamon blotches on the sepals; lip broad, wedge-shaped at base, with obscure teeth at the rounded outer border. New Grenada, 1880.
O. hystrix (bristly). A synonym of O. luteo-purpureum. O. Insleayi (Insleay's).* dagger fl. from 2in. to 4in. in diameter; sepals and petals yellow, or yellowish-green, transversely banded with dull reddish-brown, narrow; lip narrow, some-what spoon-shaped, bright yellow, dotted near the margin with cinnamon; scape tall, branched, bearing from five to ten blossoms. Winter. Mexico, 1840. This greatly resembles O. grande in habit, but its pseudo-bulbs are more compressed, longer, and fluted. SYN. O. Lawrenceanum, of gardens. (B. O. 4.)
O. I. leopardinum (leopard-spotted). fl., sepals and petals deep yellow, barred across with bands of reddish-crimson; lip beautifully bordered all around with spots and dots of the same dark colour. Mexico, 1876. A very beautiful variety, richer in its markings than the type. (R. G. 856.)
O. I. pantherinum (panther-spotted). fl., sepals and petals chestnut-brown, with paler margin; the whole of the lip arabesqued with red and yellow. A fine variety.
O. I. splendens (shining). fl., sepals and petals rich shining brown, tipped with yellow; lip large, yellow, spotted with purple. Mexico, 1868. A very fine form.
O. Josephinae (Josephine's). A synonym of O. crispum Andersonianum.
O. Karwinskii (Karwinski's). A synonym of O. laeve.
O. Kegeljani (Kegeljan's). fl. arranged in a close raceme; sepals and petals yellow, elliptic-lanceolate, acute, the former incurved and marked with two or three red-brown blotches; lip oblong, cuspidate, concave, with serrulated margins, the base, apex, and margins white, and the rest reddish-brown. Peru, 1878. Nearly related to O. triumphans. (B. H. 1877, 10.) O. Krameri (Kramer's).dagger fl. of a very pretty violet colour, the lip marked and spotted with yellow and purple, and having two lines of rich dark brown near the column; sepals and petals ligulate, obtuse; lip somewhat reniform, and deeply notched in front; peduncles drooping, freely produced, and usually three-flowered. Pseudo-bulbs somewhat flat, with sharp edges, sometimes almost spherical, at others ovate, pale green, and bearing but one leaf. Costa Rica, Mexico, 1868. A very pretty, but rare, species. (B. M. 5778; B. O. 24; F. M. 1868, 406; I. H. 562; W. O. A. i. 40.)
O. K. Smithianum (Smith's). fl. ivory-white, having a sulphur-coloured, reddish-spotted callus on the lip, and an orange transverse line, resembling two crescents, in front of it.
O. laeve (smooth).* fl. very fragrant when first expanded, 2in. to 2 1/2in. across, numerous, in slightly-branched racemes; sepals and petals cinnamon-brown, banded with yellow, the dorsal sepal and petals ascending, the lateral sepals deflexed; lip white and violet, smaller and shorter than the sepals, sessile, fiddle-shaped. l. 6in. to 10in. long, oblong-lanceolate, acute. Pseudo-bulbs 3in. to 4in. long, 2in. to 2 1/2in. broad. Guatemala, 1841. (B. M. 6265; B. O. 16; B. R. 1844; I. H. 1859, 213.) SYNS. O. Karwinskii, O. Reichenheimii (B. O. 15).
O. Lawrenceanum (Lawrence's), of gardens. A synonym of O. Insleayi.
O. lepidum (elegant). fl., sepals and petals at first yellow, afterwards changing to white, with yellow edging, the former with two or three brown spots, the latter with only one; lip cuneate-hastate at base, with a long central claw and a reniform, apiculate front lobe, a brown spot in front of the keels; panicles short, many-flowered. Pseudo-bulbs round, rather flat. Columbia, 1884.
O. Lindenii (Linden's).* fl. yellow; sepals and petals unguiculate, lanceolate, undulated, acute; lip ovate-lanceolate; crest fleshy, glabrous, having four irregular flaps placed below the finger-like processes of its extremity; scape 2ft. to 3ft. high, with uniform lateral arms for more than half its length, each arm bearing from five to seven flowers. l. nearly 1ft. long, erect, ensiform. New Grenada, 1852. SYN. O. platyodon. (F. M. n. s. 333.)
O. Lindleyanum (Lindley's). fl. disposed in racemes; sepals and petals yellow; lip white, curiously lobed. l. lanceolate. Pseudo-bulbs flattened. New Grenada, 1865. (B. O. 11)
O. L. Coradinei (Coradine's). fl. from 2in. to 3in. across; sepals and petals pale yellow, with two or three chestnut-brown blotches; lip creamy-white, with a large irregular blotch on its disk, and a few smaller spots near its base; spike few-flowered. (G. C. 1872, 1068; W. O. A. ii. 90.)
O. L. ligulare (strap-like). fl., sepals and petals orange-yellow, with two or three large brown blotches; lip having an orange claw, and a hastate-ligulate, blunt, yellow blade, with a large brown blotch on its disk. 1882. A very handsome plant.
O. L. mirandum (extraordinary). This differs from the type in its stiff, one-sided raceme, well-developed, rhomboid, serrate column-wings, lanceolate leaves, and large, plump pseudo-bulbs. Columbia, 1882.
O. Londesboroughianum (Lord Londesborough's).* fl. light yellow, racemose; sepals and petals oblong, the latter crisped; lip transversely reniform, having on each side of its base a small, blunt, narrow, retrorse auricle; column yellow, wingless, bent. Mexico, 1876. SYN. O. oncidioides. (F. M. n. s. 246; W. O. A. ii. 82.)
O. Luddemannianum (Luddemann's). A synonym of O. maculatum. O. luteo-purpureum (yellow-purple).* fl. about 2 1/2in. across; sepals and petals lanceolate, acuminate, most frequently rich brown or purple, more or less blotched and banded with white or light yellow, and having a golden-yellow, border; lip white, with a brown base, minutely serrate; scape longer than the leaves, many-flowered, simple or branched, and from 1ft. to 3ft. long. Winter and spring. l. oblanceolate, often of a bronzy colour. Pseudo-bulbs conical, slightly compressed, two-leaved. New Grenada. A species of robust habit, and extremely variable both in size of flowers and in the intensity of their markings; so much so, that hardly two specimens are alike. SYNS. O. hystrix, O. lyroglossum, O. radiatum. (B. O. 17.)
O. l.-p. amplissimum (very large). A fine variety, with very broad sepals and petals, of a clear light yellow, with a few brown streaks at the base, and a few large brown blotches on the disk. 1882.
O. l.-p. cuspidatum (cuspidate).* fl. yellow, tinted with rich chestnut-brown, and with a white lip, large; sepals and petals rather narrow, lanceolate, acuminate, spreading; lip ligulate, acuminate, wavy, and toothleted, with several split crests in front of the great square mark in the centre. Columbia, 1881. (R. X. O. 184, 1.)
O. l.-p. facetum (well-formed). fl., sepals light yellow, with very large, rather cinnamon-coloured blotches, lanceolate, straight; petals lanceolate, straight, with numerous fine teeth, light yellow, covered with numerous small cinnamon-coloured blotches; lip almost circular, short, finely fringed, convolute, undulate, light yellow, having a radiating semicircle of keels; column with very multifid wings.
O. l.-p. mulus (mule).* fl. bright yellow, with cinnamon-brown spots. New Grenada, 1878. A very fine plant. SYNS. O. histrionicum, O. Holfordianum. (G. C. n. s., xix. 469; R. X. O. ii. 160.) O. l.-p. sceptrum (sceptre). fl., sepals larger than the petals, deep chocolate-brown, streaked and margined with yellow; petals irregularly lobed at the edges, golden, with two or three large chestnut-brown blotches; lip yellow, with serrated edge, dotted and blotched with chocolate. New Grenada, 1872. (I. H. 73.)
O. lyroglossum (lyrate-lipped). A synonym of O. luteo-purpureum.
O. maculatum (spotted).* fl. of a soft deep yellow, beautifully barred or spotted towards the centre with rich brownish-crimson, measuring 3in. to 4in. across; sepals lanceolate; petals much broader; lip cordate, large, spreading, yellow, spotted with brown; clusters pendent, consisting of about six blossoms. Spring. Pseudo-bulbs short, thick. Mexico, 1838. A lovely species, the habit of which is very similar to that of O. cordatum. SYNS. O. anceps (I. H. 128), O. Luddemannianum (R. G. 1859, 275). (B. M. 6455; B. O. 20; B. R. 1840, 30; W. O. A. ii. 52.)
O. m. polyodon (many-toothed). A synonym of O. m. erosum.
O. maculatum (spotted), of Hooker. A synonym of O. cordatum.
O. madrense (Sierra Madre). A synonym of O. maxillare.
O. marginellum (slightly margined). fl., sepals and petals light ochreous colour, spotted with brown; lip dark reddishbrown, with a yellow margin and yellow-tipped calli. 1883.
O. maxillare (jawbone).* dagger fl., sepals and petals white, with a large purplish-brown blotch at the base; lip orange, margined with white, and having a brown spot in the centre. Summer. Pseudo-bulbs light green. Mexico, 1846. A very distinct and handsome species. SYN. O. madrense (I. H. 480; W. O. A. ii. 71). (B. M. 6144.)
O. maxillare (jawbone), of gardens. A synonym of O. nebulosum. O. membranaceum (membranous). A synonym of O. Cervantesii.
O. Murrellianum (Murrell's). fl., sepals and petals white, slightly tinged and spotted with purplish-violet. Columbia, 1875. A pretty natural hybrid.
O. M. cinctum (girded). fl. white, racemose; sepals and petals bordered with lilac; lip with some lilac spots on the front lobe, the base with a large yellow callus and some red spots. 1883. (R. G. 1101.)
O. naevium (speckled). fl. pure white, speckled and spotted with purplish-crimson; sepals and petals about 2in. long, lanceolate, beautifully crisped or waved; spike arching, 1ft. to 1 1/2ft. long, and from ten to sixteen-flowered. May and June. l. oblong, narrow. Pseudo-bulbs oblong, flattened, deep green. New Grenada, 1842. A beautiful species. (B. O. 9; L. & P. F. G. i. 18; R. G. 791.)
O. nebulosum (clouded).dagger fl. white, more or less spotted with brown, 2in. to 4in. across; sepals and petals 1 1/2in. to 2in. long, 1in. to 1 1/4in. broad, oblong, slightly incurved; lip cordate, with a lemon-yellow, bilobed crest, and a few brown spots; spikes stout, five to seven-flowered. March to May. Pseudo-bulbs roundish, two-leaved. Maxico. SYN. O. maxillare, of gardens (I. H. 1859, 200). The figures and descriptions of O. maxillare and O. loeve are, in the work last named, curiously out of place; the description of O. maxillare is opposite the plate of O. loeve, and that of O. loeve is opposite figure of O. maxillare. (B. O. 1; G. C. 1867, 572.)
O. n. candidissimum (very white). A variety with entirely white flowers. 1884.
O. n. candidum (white). A free-growing form, having the flowers pure white, with the exception of the yellow crest and a few brown spots on the lip. 1867.
O. n. guttatum (spotted). A fine variety, having the basal half of the sepals and petals, and the greater part of the lip, spotted with reddish-brown. 1884. O. n. pardinum (panther-like). A desirable form, having the flowers more densely spotted or blotched with brown. Columbia, 1873.
O. n. Pattisonianum (Pattison's). fl. snow-white, large, with a yellow callosity on the lip.
O. nevadense (Sierra Nevada). fl. large, disposed on long spikes; sepals and petals chocolate-brown, margined and tipped with yellow, and streaked with the same colour; lip white; middle lobe cordate, and slightly serrate at the edge, side lobes spotted with brown inside. Pseudo-bulbs dark green, bearing leaves which are narrow at the base. Columbia, 1871 A very rare species, distinguished by the singular crescent shape of the base of the lip in front of the stalk. (I. H. ser. iii. 45; W. O. A. iii. 131.)
O. nobile (noble). A synonym of O. Pescatorei.
O. odoratum (sweet-scented).* fl. yellow, spotted and blotched with chocolate-brown, very fragrant, 1 1/2in. to 2in. across; sepals and petals lanceolate-acuminate, with undulated edges; lip lanceolate-trilobed, white, with a purple base; scape erect, branched, many-flowered. Winter and spring. Pseudo-bulbs ovoid, two-leaved. Sierra Nevada. A rare species. SYN. O. gloriosum (B. O. 12). (B. M. 6502.)
O. o. baphicantum (dyer's). fl. yellow, with purple blotches finely suffused over the whole of the sepals, petals, and lip; lip pandurate, cuspidate, serrate; column with an apiculate, serrate, cuspidate wing. Columbia, 1876.
O. o. deltoglossum (deltoid-lipped). fl. sulphur-coloured, with brown blotches and smears; sepals and petals spreading, lanceolate, acuminate, undulate; lip deltoid, with an orange base, little brown stripes on each side of the base, and a much larger brown obcordate blotch on the disk; column slender, with single tendril-like wings, whitish-yellow, with brown in front; raceme slender.
O. o. hebraicum (Hebrew-marked). fl. pale yellow, with brown spots and irregular stripes, twice as large as those of typical O. odoratum; lip darker yellow at base, with a cordiform, maroon-brown central blotch, and some spots and stripes of the same colour; callus bifid, with an erect apiculus in sinus, and four teeth on each side. 1879. (W. O. A. ii. 85.) The sub-variety lineoligerum has the letter-like markings broken up into spots and lines. (W. O. A. v. 84.)
O. o. latimaculatum (broad-spotted). A distinct variety, having deep golden flowers, which are very heavily blotched with bright crimson-brown. Columbia, 1871. (I. H. 1870, 39.)
O. o. Leeanum (Lee's).* fl., sepals and petals bright yellow, with numerous brown spots, lanceolate, acuminate; lip long and narrow, bright yellow, with a paier disk and a few brown spots. 1882.
O. Oerstedii (Oersted's).* fl. white, solitary, or in twos, the callus of the lip and the disk before the column yellow, with a few red spots; the column has very small, triangular, blunt auricles at each side of the base of the stigmatic cavity. Pseudo-bulbs roundish, two-edged, clothed with brown spathes, growing in dense masses, and having each a single, oblong, stalked leaf. Costa Rica, 1877. (B. M. 6820; Gn. xxvi. 454.)
O. oncidioides (Oncidium-like). A synonym of O. Londes-boroughianum.
O. pardinum (panther-spotted). dagger fl. pure golden-yellow, with numerous brown blotches, disposed in wide panicles. December. l. elliptic-oblong. Pseudo-oblong. Pseudo-bulbs ovate-compressed. Peru, 1867. (B. M. 5993.)
O. pendulum (pendulous). A synonym of O. citrosmum.
O. Pescatorei (Pescatore's).* fl., sepals and petals usually snow-white; lip panduriform, white, blotched at the base with purplish-crimson and yellow; spikes, or panicles, 1ft. to 2ft. long, erect or drooping, bearing from ten to 100 flowers. Spring. l. 6in. to 12in. long. Pseudo-bulbs thick, speckled with brown, two-leaved. New Grenada, 1851. A very lovely species, and one of the best of the genus. SYN. O. nobile. (B. O. 5; F. d. S. xvi. 24; Gn. xxvi. 452; R. G. 835; W. O. A. ii. 168.) Other forms than those enumerated have been called aurantiacum, flaveolum, purpuratum, in reference to the colour of the flower or parts of it.
O. P. excellens (excelling). fl., sepals yellow, blotched with purple, the odd one with a white central area; petals broader, white, with yellow margins; lip pandurate, white, with yellow crests and purple blotches. 1882. (Gn. xxi. 330.)
O. P. Veitchianum (Veitch's) A handsome variety, with broad mauve zonal bands and blotches, two on each sepal and petal. With this may be grouped elegans, Lawrenceanum (Hort.), limbosum, Lowianum, Schroederianum, and Thomsonianum, all differing more or less from it in the form and extent of the blotches on the floral segments.
O. Phalaenopsis (Phalaenopsis). A synonym of Miltonia Phaloenopsis.
O. platyodon (broad-toothed). A synonym of O. Lindenii.
O. polyxanthum (very yellow flowered). fl. 3in. to 4in. in diameter; sepals and petals yellow, blotched with chocolate; lip roundish, cuspidate, yellow at base, brownish-purple in front, and whitish-edged; spike 2ft. long. Ecuador (at 8000ft. altitude), 1881. (F. M. n. s. 453; G. C. xvi. 461, xix. 761.) O. praenitens (shining forth). fl. bright golden-yellow, blotched with brownish-purple, lax, 2in. in diameter; sepals and petals nearly equal, elliptic-lanceolate, acuminate, rather waved; scape six to eight-flowered. l. 6in. to 8in. long, recurved, narrow, linear-oblanceolate. Pseudo-bulbs 2in. long, narrowly oblong, slender, much flattened. Columbia, 1874. (B. M. 6229.) Most of the plants in cultivation under the name of O. proenitens are referable to O. facetum, of Reichenbach.
O. praestans (distinguished). fl. yellowish, panicled; upper half of the linear-lanceolate sepals and petals maroon-brown; lip trifid, the basal lobes ciliated, and the four crests of the disk toothed, the inner ones aristate. l. linear-lanceolate, acute. New Grenada, 1875. Allied to O. odoratum.
O. pulchellum (pretty).* dagger fl. of a crystalline whiteness, very fragrant, about 1in. across; lip white, curiously bent or twisted, having a crest shaped like a W, of a clear lemon-yellow, with a few purple dots; spikes erect, about 1ft. high, and from ten to twelve-flowered. Spring. l. in pairs, dark green, very narrow. Pseudo-bulbs dark green, ovoid. Mexico, 1841. (B. M. 4104; B. R. 1841, 48.)
O. p. majus (greater).* A very robust form, having the pseudo-bulbs much larger, and the flowers fully double the size of the typical species. A most desirable plant.
O. purum (pure). A synonym of O. Wallisii.
O. radiatum (rayed). A synonym of O. luteo-purpureum.
O. ramosissimum (much-branched). fl. white, all parts being spotted, in different varieties, with deep violet, purple, or lilac; panicles large, much branched. l. long, linear-ligulate. Pseudobulbs oval, compressed. Venezuela, 1875. A showy orchid.
O. r. xanthinum (yellow). fl. yellow; sepals and petals twisted, streaked and spotted with mauve-purple; callus of lip ochre, with mauve-purple radiating rays around and before it. Columbia, 1880. A pretty variety.
O. Reichenheimii (Reichenheim's). A synonym of O. loeve.
O. Roezlii (Roezl's). A synonym of Miltonia Roezlii.
O. Rossii (Ross').* fl. from 1in. to 2in. across; sepals lanceolate, about 1in. long, white, transversely barred with brown; petals sub-hastate, much broader than the sepals, pure white, with a few spots at their bases only; lip oblong or cordate, pure white, with a lemon-yellow, bilobed crest; column white; scapes from two to five-flowered. Winter. Pseudo-bulbs angular. Mexico, 1839. SYN. O. acuminatum. (B. R. 1839, 48; F. d. S. 2110; Gn. xxviii. 507.)
O. R. aspersum (sprinkled). dagger fl., sepals whitish-yellow, mottled with brown blotches, keeled on the back; petals broader, whitish-yellow, with a few brown spots at the base; lip whitish, the basal callus yellow, with brown lines; bracts short and broad. 1879.
O. R. Ehrenbergii (Ehrenberg's).* dagger fl., sepals pure white, narrow; petals white, barred with brown at base; lip white. Autumn and winter. Pseudo-bulbs and leaves small, dark green. Peru, 1842. A very pretty little variety, which may be grown in a rustic basket, suspended from the roof of a Wardian case. (F. d. S. 846; I. H. i. 30.)
O. R. Humeanum (Hume's). fl., sepals yellow at their ends, with cinnamon bars, triangular-acuminate; petals oblong-acuminate, crisped, white, with three sepia-brown blotches at their base; lip two-lobed, white, with a yellow callus, striped inside with red; peduncle two-flowered. 1876.
O. R. musaicum (mosaic). A very handsome form, the violet petals having their lower halves covered by a large and beautiful blotch, green and yellow, and the lobes streaked and dotted.
O. R. rubescens (ruddy). A grand variety, with large, light, rose-coloured flowers, richly marbled with dark purple, turning to chestnut-brown. 1881.
O. R. Warnerianum (Warner's).* fl., sepals and petals pure white, with a few brown spots; lip white, shaded with rose, and having a yellow blotch at the base; scape longer than the leaves, four or five-flowered. Autumn and winter. l. one on each pseudo-bulb, less than 9in. long, membranous, sharppointed, narrowed at the base into a channelled petiole. Mexico, 1865. A very handsome, dwarf species. (B. O. 13; G. C. 1865, 579.)
O. Schillerianum (Schiller's).* fl., sepals and petals yellow, blotched with brown, or sometimes nearly all brown, cuneate-oblong, acute; lip with small, upright basal lobes, and an oblong-acute, wavy, velvety front lobe, yellow, with a purple blotch and two blunt calli on the disk. 1884. A fine species. (R. X. O. i. 22.)
O. Schlieperianum (Schlieper's). fl. pale yellow, blotched and barred with a deeper shade of the same colour, or almost destitute of spots; scapes erect, many-flowered. Autumn. New Grenada, 1856. This species very closely resembles O. grande in habit and growth. (F. M. 461; G. C. 1865, 1082; R. G. 605; R. X. O. ii. 143.)
O. Schroederianum (Schroeder's). fl., sepals and petals white, with mauve-purple blotches, oblong, acute, wavy; lip pandurate, white, with two mauve-purple blotches on the disk; callus having a plate of radiating spines on each side, yellow, with red spots. 1882. A distinct hybrid, in the way of O. tripudians.
O. stellatum (starry-flowered). fl. pale yellow, barred with brown; sepals and petals about 1in. long; lip white, somewhat concave, very much jagged round the margin; scapes about 4in. high, one-flowered. June. Pseudo-bulb 2in. to 3in. long, one-leaved. Mexico, 1839. A pretty, but not very showy, species. (B. O. 13.) O. tentaculatum (tentacled). fl., sepals and petals yellow, spotted with white, narrow, without angles; lip whitish, with a large, brown spot on the disk, and some small ones at the base, pandurate-lanceolate, acute. 1883.
O. tetraplasium (four-formed). fl., white, with purplish spots growing on diffuse panicles, and equalling in size those of good forms of O. odoratum. Peru, 1875. Allied to O. Weirii.
O. tripudians (dancing).* fl. 2in. in diameter, brown, with yellowish-green edges and a few dots; sepals and petals nearly equal, lanceolate; lip oblong, acuminate, with a white basilar disk; the region about the calli of a beautiful purplish-violet; column whitish, with purplish-brown wings. Colmubia, 1871. (B. M. 6029; F. M. m. s. 208.)
O. t. cinctum (girded). fl., sepals and petals yellow, blotched with maroon; lip very broad, white, with a large brown blotch and smaller ones beside it. 1883.
O. t. Harryanum (Mr. Harry Veitch's). In this form, the sepals and petals are almost blackish inside, tipped with light yellow; the lip is light yellow, and mauve at the base. 1883.
O. t. oculatum (eyed). fl., lip white, pandurate, crisped, marked with violet around the crest, and with a large brownish-violet blotch in front.
O. t. xanthoglossum (yellow-lipped). A variety with a totally yellow lip, mauve blotches, and the crests only pure white. 1881. O. triumphans (triumphant).* fl. large and thick in substance, measuring upwards of 3in. in diameter; sepals and petals bright golden-yellow, blotched with deep brownish-crimson; lip cordate, the front portion deep warm rose-colour, and the basal half pure white, with a yellow centre; scape erect, many-flowered, branched. Spring. Pseudo-bulbs short, thick, speckled with brown, and bearing shining bright green leaves. Tropical America, 1867. A splendid species, of which there are several very desirable varieties. (B. O. 23; I. H. 609; W. O. A. 258.)
O. Uro-Skinneri (Ure Skinner's).* fl., sepals and petals oblong, light green or greenish-yellow, freckled with reddish-brown spots, 1 1/2in. across; lip broad-cordate, white, thickly covered with soft blue spots, and sometimes tinged with red; spikes simple, 2ft. to 3ft. high, from ten to twenty-flowered. Latter part of summer and autumn. Pseudo-bulbs thick, bearing broad lanceolate leaves, 9in. to 12in. in length. Guatemala, 1854. A bold, free-growing species, very distinct in its colouring. It is closely allied to O. bictonense, but may be distinguished by the broad pseudo-bulbs, which become covered, in their second year, with a multitude of small, reddish dots; its wide sepals and petals; and the spotting of the lip. (B. O. 2.)
O. velleum (fleecy). fl., sepals and petals yellow, with brown streaks; lip whitish, with numerous violaceous stripes and blotches. l. about 6in. long. Pseudo-bulbs narrow, flat. Ecuador, 1874.
O. vexativum (provoking). fl., sepals chestnut-brown, broad; petals broader, white, spotted with olive-green at the base; lip with a broad, semi-ovate blade, white, with a few olivaceous spots; callus yellow, with small red blotches; column white, wingless, tomentose; inflorescence large; bracts spathaceous. Mexico, 1877. A beautiful orchid.
O. vexillarium (standard). A synonym of Miltonia vexillaria.
O. Victor (Victor). fl., sepals and petals yellow, with brown spots, spreading, wavy, and twisted; lip white, with brown blotches, pandurate, denticulate. 1883. This plant bears great similarity to O. Hallii. O. Wallisii (Wallis'). fl. 2in. to 3in. across; sepals and petals oblong, about 1in. long, golden-yellow, blotched with rosy-purple; lip straw-coloured, with a rosy blotch near the apex partially adnate to the column, and having the crest, margin, and apex white; spike erect or arching, five to ten-flowered. l. very narrow, grass-like, 9in. to 12in. long. Pseudo-bulbs ovoid, two-leaved. Columbia, 1870. SYN. O. purum. (I. H. n. s. 56.)
O. Weirii (Weir's). fl. white, marked with lilac or purple, disposed in diffuse panicles; lip wavy, oblong, acute, velvety on the surface. New Grenada, 1875.
O. Weltoni (Welton's). A synonym of Miltonia Warscewiczii.
O. Wilckeanum (Herr Wilcke's).* fl. of a very light whitish-yellow; sepals triangular, crisp; petals oblong, triangular, much broader, with some projecting angular laciniae; both sepals and petals have elegant brown blotches, which are transverse in the former and marginal in the latter; lip similar to that of O. crispum, with three to five small tendril-like processes each side, and two ragged keels, which are free at their ends, including an intermediate apiculus, orange at the base, elsewhere lightest yellow, with some brown blotches; column pale whitish-yellow, with a few brown spots; peduncles bearing a raceme of about five flowers. 1878. A very handsome hybrid, just intermediate between O. crispum and O. luteo-purpureum. (G. C. n. s., xxi. 640.)
O. W. sulphureum (sulphur-coloured). fl. sulphur-coloured, having a few red blotches and lines on the lip, and one or two on the lateral sepals. 1884.