170 ' BRITISH BOTANY. 



tapering at the apex, longitudinally veined (nerved). Seeds 

 ovate, tubercled, with a very short hilum. 



In bushy and grassy places ; rare. Annual ; June, July. 



Ii. Aphaca, L. Yellow Vetchling, or Grass Vetchling. — e.b. 

 1167. L.B.s. 305. 



A. 5-9 ? C. 20. Lat. 50-53°. Alt. 100 yds. Tern. 51-48°. 



Stems angular, weak, usually prostrate, branched. Leaves 

 abortive (only a long, slender, coiled tendril is developed) ; sti- 

 pules large {like two opposite leaves), cordate-sagittate. Flowers 

 on long, slender peduncles, 1-2 (rarely 2), yellow. Calyx-teeth 

 almost equal, linear-acute, spreading. Legume compressed, ob- 

 long, reticulate. Seeds ovate, smooth, with a very short hilum. 



Sandy and gravelly fields ; rare. Annual ; May- August. 



Tribe III. HEBTSJEEJiJ. — Leaves unequally pinnate. Legume di- 

 vided transversely into one-seeded joints. 



Synopsis of Geneea, see p. 139. 



Ornithopus, Lin. — Annual plants, with miequally pinnate 

 leaves and small flowers, which are either solitary or in few- 

 flowered umbels. Calyx tubular, campanulate, with five almost 

 equal teeth. Legume linear, curved, with oblong, slightly-com- 

 pressed Joints. 



O. perpusillus, Lin. Bird's Foot. — e.b. 369. l.b.s. 291. 

 A. 16. C. 70. Lat. 50-58°. Alt. 0-100 yds. Tern. 51-46°. 



Root annual. Stems spreading or ascending, diffuse, very pu- 

 bescent. Leaflets numerous, oblong, small; stipules triangular, 

 scarious, barely visible. Peduncles 1-4-flowered. Legume hairy, 

 strongly reticulate, terminated by a short and slender beak. 



Sandy places. Annual ; June-September. 



Var. /8. leiocarpus. — Legume glabrous. 



Arthrolobium, Desv. — Leaves pinnate, in many pairs. Flowers 

 pedunculate. Calyx tubular, with five nearly equal teeth. Keel 

 of the corolla blunt. Legume elongated, cylindrical, consisting 

 of many one-seeded joints, which are scarcely contracted at their 

 junctions, not opening. 



A. ebracteatum, DC. Sand Joint -Vetch. — e.b.s. 2844. l.b.s. 

 292. 



A. 1. C. 1. Lat. 49-50°. Alt. 0. Tern. 53-52°. 



Stem round, prostrate, branching, leafy. Leaves on short leaf- 

 stalks ; leaflets in numerous pairs, with an odd terminal one, ob- 



