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Summer (L alternate greyish-green)

l. alternate, greyish-green, unequally palmate, lower segments stalked, upper ones sessile and tripartite. h. 1 1/2ft. to 3ft. Orient. (F. d. S. 1185.) D. grandiflorum (large-flowered).* fl. blue, and the intermediate shades to white, either double or single, large; petals shorter than the calyx, two lower ones somewhat orbicular, with obliquely inflexed entire borders; racemes spreading, few-flowered, diverging. June. l. palmately many-parted into distant linear lobes. h. 1ft. to 2ft. Siberia, 1816. (B. M. 1686.) A very handsome plant, with several varieties, the best of which is perhaps chinensis, in which the racemes are many-flowered, lateral ones diverging. Other forms are: album (white), album-pleno (double-white), flore-pleno (double-blue-flowered), pallidum, and rubrum.

D. hybridum (hybrid). fl. blue, with the two lower petals bearded with white; racemes crowded; spur straight, longer than the flowers. June to August. l. many-parted, with linear lobes; petioles dilated and sheathing at the base. h. 3ft. to 4ft. Tauria, 1794. Lower part of the plant smooth, upper part velvety-pubescent.

D. h. ochroleucum (yellowish-white). fl. white, smooth on the outside; racemes elongated, crowded; bracts membranaceous, broad-lanceolate; spur straight, blunt, rather longer than the pedicel. July and August. l. many-parted, with linear lobes; petioles dilated and sheathing at the base. h. 3ft. Armenia, 1823. SYN. D. albiflorum.

D. laxiflorum (loose-flowered). fl. blue; racemes loose, branched. June. l. three to seven-lobed, with the lobes oblong, acute, deeply pinnatifid; upper ones somewhat three-parted, with narrow, entire lobes; petioles not dilated at the base. h. 4ft. to 6ft. Siberia. (B. R. 24, 30.) D. mesoleucum (white-centred). fl. blue, with pale yellow or whitish petals. June. l. rather dilated at the base, with wedge-shaped segments, which are deeply serrated at the top. Upper part of the stem, as well as the peduncles, pubescent. h. 3ft. Native country unknown. 1822.

D. nudicaule (naked-stemmed).* fl. red; petals clear yellow, lower ones spathulate, with a two-cleft, fringed limb, upper ones elongated, prominent, hairy at the ends; spur nearly twice the length of the calyx; raceme loose.