CL. XVII-3 DIADELPHIA DECANDRIA. 291 



and June : grows in mountainous woods and thickets : not common. 

 Eng. Bot. vol. viii. pi. 518. Eng. Fl. vol. iii. p. 273. 1039. 



9. LATHYRUS. VETCHLINO. 



Calyx superior, cup-shaped, unequal, with five lance-shaped 

 segments, the two upper snorter, the lower one longest. Corolla 

 of five petals ; standard largest, inversely heart-shaped, reflected 

 at the sides ; wings oblong, obtuse, somewhat curved upwards, 

 approaching each other; keel rounded, of two united petals, 

 with separate claws. Filaments ten, nine united into a com- 

 pressed tube, open at the upper edge, the other hair-like, separate ; 

 anthers small, roundish. Germen oblong, compressed. Style 

 ascending, flattened vertically, dilated upwards, acute at the end ; 

 stigma longitudinal, downy, running along the upper half of 

 the style. Legume long, cylindrical or compressed, pointed, one- 

 celled, two-valved. Seeds several, roundish. Name, lathyros, 

 used by Theophrastus. 354. 



* Flowers solitary. 



1. L. A'phaca. Yellow Vetchling. Tendrils without leaves : stipules 



heart-shaped and arrow-shaped. Stems procumbent or climbing by 



means of tendrils, each of which arises from between a pair of large 

 stipules : flowers greenish-yellow. Annual : flowers from June to 

 August : grows in the borders of sandy fields in England : rare. Eng. 

 Bot. vol. xvii. pi. 1 167. Eng. Fl. vol. iii. p. 274. 1040. 



2. L. Nissolia. Crimson Vetchling. Leaves simple, without tendrils ; 



stipules awl-shaped. Stems slender, with sessile lance-shaped leaves, 



and crimson flowers. Annual : flowers in May : grows in the borders 

 of fields in England: frequent. Eng. Bot. vol. ii. pi. 112. Eng. Fl. 

 vol. iii. p. 275. 1041. 



** Flowers in pairs. 



3. L. hirsutus. Rough-podded Vetchling. Tendrils with two narrow 



lance-shaped leaflets; legumes hairy; seeds rough. Stem winged, 



slightly hairy, climbing : flowers variegated, the standard crimson, the 

 wings pale-blue, the keel white. Annual : flowers in July : grows in 

 cultivated fields in England : rare. Eng. Bot. vol. xviii. pi. 1255. Eng. 

 Fl. vol. iii. p. 275. 1042. 



*** Flowers numerous on each stalk. 



4. L.pratgnsis. Yellow Meadow Vetchling. Tendrils simple, each 



with two lance-shaped leaflets. Stems weak, branched from one to 



two feet high : flowers yellow, eight or nine together, on long stalks. 

 An excellent pasture plant. Perennial : flowers in July and August : 

 grows in meadows and pastures : common. Eng. Bot. vol. x. pi. 670. 

 Eng. Fl. vol. iii. p. 276. 1043. 



5. L. sylvestris. Narrow-leaved Everlasting-pea. Tendrils branched, 



each with two sword-shaped leaflets ; stem winged. Stems climbing, 



three or four feet long : flowers on axillar stalks : corolla variegated 

 with pale-crimson, blue and green. Perennial : flowers in July and 

 August : grows in thickets and hedges in England, very rare in Scotland. 

 Eng. Bot. vol. xii. pi. 805. Eng. Fl. vol. iii. p. 277. ' 1044. 



. 6. L. latifdlius. Broad-leaved Everlasting-pea. Tendrils branched, 



