PAPILIONACK.K. 



59 



Sttjie llat, villous on the u|>|)cr side, widened towanls the sum- 

 niit. Lmume ohlon*^, several seeded. Peduncles axillary. 

 Petioh\i produced into tendrils. 



1. L. Pi*siLLrs. A slender branching vine, glnbrous, angled and winged. 

 LtafUt* asingleliair, linear-huiceoiate, ncute at encli end, slightly mucronate. 

 Stipules largis acuic, saizittate, slightly tuhute. Legume 11-15 seeded. 

 Purple. ©• April— May. Near Charleston. 



Genus IV. PHASEOLUS. 



Calyx 5-clet't, the 2 upper teetli often partially united, cam- 

 panulate. Keel, stamens, and style spiiaily twisted together. 

 Le<:ume talcate, sli|j:htK' compressed, many seeded. Seed 

 renitorm, nearly cylindrical. Hilum small, naked. An 

 hcrhaceous, trailing plant. 



1. P. Perenkis. Stem voluble, climbing over small shrubs, pubescent; 

 Leaves ternate, the lateral leaflets inequilateral, the terminal generally slightly 

 cordate, pubescent beneath. Stipules lanceolate, small. Flowers in axillary 



-. Ioo^ely flowered. Cu/yx somewhat bilabiate, with 2 bracts at the 

 < th of the "aly\. broad and short. Vexillum, reflected, keel compres- 

 sed and spiral. Legume falcate, mucronate, many seeded, attached alter- 

 nately to each valve. 



l^urple. '~IX. July — Sept. In damp rich land. 



2. P. DivERSiFOLics. Stem prostrate, diffuse, retrorsely hirsute. Leaves 

 terna'e. lA-'iflets o\aie, angular, or "^-S-lobed, slightly hairy along ihe mar- 



IIS. F^oweis c.ipitaie, 8-14, and peduncles 3-G inches long, the 



if the calyx uarrow, longer than the tube, the upper fornie(rof 3 



' nearly to tlic summit, having the appearance of a -t-cleft calyx. 



. . ^ ::ed, keel acuminate, twisted. LegHme terete, slender, slightly 



pul)e«cent, many seeded, se«ds wooly, hilum linear. 



Purple. G. Aug.— Oct. Sand hills and the coast. 2-8 feet long. 



3. P. Helvolus. Stem slender, prostrate or climbing, retrorsely hirsuted. 

 Z.€ui^# ternnte; leaflets <>blong-ovaie, or linear-oblong, tapering towards the 

 summit. Floirers m heads, few, calyx with the upper segment broad, lower 

 lanceolate, about the length of tlie tube; vexillutn nearly round, keel as long 

 as the vexillum, with a tooth at the base of the beak. Legume, terete, pu- 

 bescent, straight, linear, many seeded. Seeds renifurm, pubescent. 



Purple. %. July — Sept. In dry fertile soils. 3-5 feet. 



Gexus V. VIGNA. 



Calyx somewhat bilahiate ; upper lip entire. Vexillum with 

 2.callositie.s, near the base of the limb, cotii pressing ihe wings. 

 Kerl not spirally twisted. Stigma lateral. Legume terete. 



1. V. Glabra. {DoUchos Lutenlus of Ell.) "S/em twinini?, running over 

 ■nail shrubs. i>av^.< ternate, leaflets ovale, acuminate. /Vout7-.« 3-^ and 

 peduncles 2-4 inches long, lower tooihof the calyx lonner than the other ; 

 vexiUum reflected ; wings rhomboidal. Keel longer Uiun than the vexilluml 

 Legume a little hairy, shghtly compressed. 



Yellow. O- Oct.— Nov. Around rice fields in the low country. 4-8 ft. 



Genxs VI. DOLICIIOS. 

 Calyx bilabiate, the upper lip generally S-cleft, seldom en- 



