CL, XIII.] POLYANDRIA POLYGYNIA. 239 



and cut, those of the uppermost linear and entire ; stem erect 

 covered with close-pressed hairs. Stem two feet high, many- 

 flowered : calyx hairy: petals bright-yellow : nectary covered by 

 a scale. Perennial : flowers in June and July : grows in meadows 

 and pastures : common, Eng., Bot. vol. x. pi. 652. Eng. Fl, vol. 

 iii. p, 51. 835. 



9. R. arvensis. Corn Crowfoot, Calyx spreading ; stem erect, 

 much branched, many-flowered ; leaves once or twice deeply 

 three-cleft, with narrow lance-shaped segments. Leaves alter- 

 nate : flowers small, with a hairy calyx, and pale-yellow petals : 

 seed-vessels" large and prickly. This' plant is exceedingly acrid, 

 and is said to be very dangerous to cattle. Annual : flowers in 

 .June : grows in corn-fields : not common. Eng. Bot. vol. ii. pi. 

 135, Eng. Fl. voL iii. p. 52. 836. 



10. R. parviftorus. Small-flowered Crowfoot. Leaves simple, 

 hairy, sharply cut, the upper ones three-lobed ; stem prostrate ; 



seeds with hooked prickles. Leaves roundish, acutely notched, 



the uppermost with three deep lance-shaped segments : flowers 

 small : yellow. Annual : flowers in May and June : grows in 

 fields and by hedges : rare. South of England, and near Dublin. 

 Eng. Bot. vol. ii, pi. 120. Eng. Fl. vol. ii. p. 53, 837. 



11. R, alpestris, Alpine White Crowfoot, Leaves simple, 

 smooth ; root-leaves somewhat heart-shaped, with three deep- 

 lobed segments, those of the stem lance- shaped, entire; flower 



generally solitary ; calyx smooth. Stem three or four inches 



high, erect, generally simple and one-flowered : petals white : ca- 

 lyx reflected, pale. This species also is said to be extremely acrid. 

 Perennial : flowers in May : grows by the sides of alpine rills, on 

 the Clova mountains, where it was discovered by Mr. G. Don. Eng^ 

 Bot. vol. xxxiv. pL 2390. Eng. Fl. vol. iii. p. 49. 838. 



12. R, hederaceus. Ivy -leaved Crowfoot. Stem creeping ; leaves 

 smooth, roundish, or kidney-shaped, with three or five rounded 



entire lobes; petals small; stamens from five to ten. Stem 



creeping or floating : leaves stalked, dark-green. Perennial : 

 flowers from May to August : grows in ditches and muddy places : 

 common, Eng. Bot. vol.^xxviii. pi. 2003, Eng. FL vol. iii. p. 54. 839. 



13. R. aqudtilis. Water Crowfoot. Immersed leaves in fine 

 hair-like segments ; floating- leaves three-lobed, bluntly crenate. 



Stems branched, submersed : flowers on long stalks, rising a 



little out of the water : petals white, yellow at the base. Peren- 

 nial : flowers in May and June : grows in ditches, ponds, and 

 rivers : common. Eng. Bot. vol. ii. pL 10L Eng. Fl. vol. iii. p. 54. 



840. 

 20. TRO'LLITJS, GLOBE-FLOWER. 



Calyx none. Petals inferior, from five to fifteen, roundish, 

 deciduous. Nectaries numerous, linear, flattened, incurved, 

 with a single lip, somewhat tubular at the base. Filaments 

 numerous, bristle-shaped, shorter than the corolla ; anthers 

 linear, erect. Germen superior, numerous, sessile, columnar. 

 Styles none ; stigmas pointed, spreading, shorter than the sta- 

 mens. Follicles cylindrical, pointed, recurved, collected into a 

 rou*d head. Seeds several, egg-shaped, smooth, Name, from 

 troll, a balL 277. 



