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August and September

l. downy, bipinnatifid, oblong; segments linear.

Britain. A much branched, erect, or decumbent plant, excellent for rough rockwork or very dry banks, &c.

A. Mutellina (Mutellina).* fl.-heads yellowish-green; lower ones stalked, upper ones sessile. July. l. all palmate, multifid, white. Stem quite simple. h. 6in. European Alps, 1815.

A. pontica (Pontine). fl.-heads yellow, roundish, stalked, nodding. September. l. downy beneath; cauline ones bipinnate; leaflets linear. h. 3ft. Austria, 1570.

A. rupestris (rock). fl.-heads brown, globose, stalked, nodding. August. l. sub-pubescent; cauline ones pinnatifid; leaflets linear, acute. h. 6in. Norway, &c., 1748.

A. scoparia (twiggy-branched). fl.-heads small, whitish; panicle broad, densely packed, about 1 1/2ft. long. Autumn. l. much divided; segments hair-like; lower branches very slender. h. 3ft. to 5ft. East Europe. A. spicata (spicate). fl.-heads brown, spicate. June and July. l. hoary; radical ones palmate multifid; cauline ones pinnatifid; upper linear, entire, blunt. Stem quite simple. h. 1ft. Switzerland, 1790. A. Stelleriana (Steller's).* fl.-heads yellow, uninteresting, round, somewhat erect. Summer. l., lower ones spathulate-incised; upper ones obtusely lobed; end lobes often confluent, about 2in. long, silvery white. h. 1ft. to 2ft. Siberia.

A. tanacetifolia (Tanacetum-leaved). fl.-heads brownish; racemes simple, terminal. Summer. l. bipinnate; lobes linear sub-lanceolate, entire, acuminated, rather downy. Stem sometimes branching at the base, herbaceous. h. 1 1/2ft. Siberia, 1768.

A. vulgaris (common).* Mugwort. fl.-heads yellow, somewhat racemed, ovate. August. l. pinnatifid; segments white, and downy beneath. Stems 3ft. to 4ft. high, furrowed. Britain. The variegated form of this species exhibits a very pleasing contrast. There is also a pretty variety with golden leaves. ARTHROPODIUM (from arthron, a joint, and pous, a foot; the footstalks of the flowers being jointed). ORD. Liliaceoe. Very pretty greenhouse herbaceous perennials, allied to Anthericum. Flowers purplish or white, in loose racemes. Leaves grass-like, radical. They thrive well in a compost of sandy loam and peat, and may be increased freely by divisions or seeds. A. cirratum (curled). fl. white; racemes divided; bracteas leafy. May. l. lanceolate, ensiform, spreading, 1ft. long. h. 3ft. New Zealand, 1821. A. fimbriatum (fringed). fl. white. July. h. 1 1/2ft. New Holland, 1822. A. neo-caledonicum (New Caledonian).* fl. small, white, on a much-branched, many-flowered panicle. May. l. tufted, linear-lanceolate, barred with black linear markings near the base. h. 1 1/2ft. New Caledonia, 1877. A. paniculatum (panicled).* fl. white; racemes divided; pedicels clustered; inner sepals crenulate. May. l. narrowly lanceolate. h. 3ft. New South Wales, 1800. A. minus is a small form of this species.

A. pendulum (pendulous).* fl. white, clustered in threes, pendulous. June to August. l. linear, keeled, shorter than the branched scape. h. 1 1/2ft. New Holland, 1822.

ARTHROSTEMMA (from arthron, a joint, and stemon, a stamen; in reference to the stamens or connectives being jointed). ORD. Melastomaceoe. Beautiful stove or greenhouse evergreen shrubs. Tube of calyx turbinate or campanulate, usually clothed with bristles, pili, or scales; lobes four, lanceolate, permanent, without any appendages between them; petals four. A mixture of loam, peat, and sand, suits them best; and cuttings of small firm side shoots will root, in April or August, under a hand glass in sandy soil. Only three or four out of the half-dozen species belonging to this genus have been as yet introduced. A. fragile (brittle). fl. rosy; cymes loose, terminal, few-flowered; calyx glandular. July. l. ovate-cordate, acute, five-nerved, serrated; branches tetragonal, beset with glandular hairs. h. 3ft. Mexico, 1846. Stove species. A nitida (glossy-leaved). fl lilac; peduncles axillary towards the top of the branches, three-flowered, longer than the petioles. June. l. ovate, acute, serrulated, glabrous on both surfaces, shining above, but glandularly hispid on the nerves beneath. Stems shrubby, erect, and are, as well as the branches, tetragonally winged, beset with coloured hairs. h. 2ft. to 3ft. Buenos Ayres, 1829. Greenhouse species.

A. versicolor (changeable-flowered). fl., petals obovate, ciliated, at first white, but at length becoming reddish, terminal, solitary. September. l. petiolate, ovate, serrulated, five-nerved, discoloured beneath. Plant shrubby; hairy. h. 1ft. Brazil (on the sea shore), 1825. Stove species. ARTICHOKE, GLOBE (Cynara Scolymus). A well-known hardy perennial, native of