CORYDALIS 
170 
leones: — Smith, Eng. Bot. t. 103, as Fumaria claviculata \ FI. Dan. t. 340, as F. claviculata ; Reichenbach 
Icon. t. 5 (Papav.), fig. 4457. 
Camb. Brit. FI. iii. Plate 179. {a, b ) Fertile shoots, (c) Infructescence. a from the West Riding of 
Yorkshire (E. W. H.): b—c from Surrey (E. W. H.). 
Exsiccata : — Billot, 1807; Fries, xiii, 46 ; Reichenbach, 884 ; Thielens et Devos, iii, 217, Wirtgen, ix, 439. 
Map 66. Distribution of C. claviculata in the British Islands 
Annual. Shoot rather glaucous. Stem weak, diffuse, very leafy, 2—6 dm. long. Petioles much 
shorter than the laminae. Laminae pinnatisect ; pinnae opposite at least below, upper ones often 
alternate, terminal ones modified into tendrils ; segments sessile, elliptical-acute, about 10 mm. long 
and 3 broad. Racemes with long peduncles, with about 10 — 20 flowers. Bracts small (3 mm. long or 
rather less). Pedicels shorter than the bracts. Flowers about 7—9 mm. long ; April to August. 
Sepals very small (about 2 mm. long, and nearly as broad at the base). Petals pale yellow to nearly 
white, spur very short (ca. 1 mm.). Capsule about 6 — 8 mm. long, about four times as long as the 
fruiting pedicels. Seeds black, shining, minutely granulate ; aril very small. 
Open oak and birch woods and scrub, and hedgerows ; on dry, rocky, siliceous, or sandy soils ; 
avoiding heavy and calcareous soils ; rather local, from the Channel Isles, Cornwall and Kent 
northwards to Sutherlandshire, but rare or absent in several counties (e.g., Cambridgeshire and 
