LBGumNo&ae. 81 



Tribe 2. PHASEOLE^E. The Bean Tribe. 



Twining or trotting plants, with odd-jnnnate leaves of Zsereral leaflets, mo$Gp 

 stipettate, destitute of tendrils; floivers often in racemes. 



6. PHASEOLUS. Linn. Kidney Bean. 



Calyx companulate, 5-cleft or 5-toothed, the 2 upper teeth 

 more or less united. Keel of the corolla with the inclu- 

 ded stamens and style spirally coiled or incurved. Legume 

 linear or falcate more or less compressed, many-seeded,, 

 tipped with the hardened base of the style. — Herbaceous 

 twining or trailing plants, with stipellate pinnatehj trifoliate 

 leaves, and knotty or compressed racemes of flowers. 



1. P. PERENNIS, Walt. Wild Bean-vine. 



Stem twining, pubescent; leaflets ovate, short-acuminate, 3-nerved; racemes 

 solitary or somewhat clustered, simple or in pairs, axillary, longer than the leaves ; 

 legume pendulous. 



Dry woods; common. July. Per. Stem 4 to 10 feet long, somewhat branching,. 

 Leaflets V/i *° «% inches long, % as wide, terminal one often sub-cordate. Raceme 

 6 to 12 inches long, loosa. Flowers numerous, purple and violet, handsome. 

 Legume about 2 inches long, % inches wide scythe-shaped, broad, inucronate. 

 Seeds dark-purple. 



2. P. diversifolius, Pers. Lobed Bean-vine. 



Leaflets broad-ovate, angular, 2 to 3-lobed, some of them oblong-ovate and entire ; 

 peduncles angled, longer than the leaves ; flowers in heads ; legume, broadly linear,, 

 rouud. 



Sandy fields and woods. Aug. Annual. Stem 2 to 6 feet long. Leaflets 1 to 2 

 inches long, % as wide, with scattered hairs beneath, sometimes more or less- 

 3-lobed. Peduncles 4 to 6 inches long, 2 to 3-flowercd. Flowers purple. Legume 

 5 to 7-seeded, black when ripe. 



3. P. helvolus, L. Long-stalked Bean-vine. 



Stem slender, hairy, twining, diffuse, or prostrate ; leaflets ovate or oblong, entire ) 

 stipules lanceolate; peduncles 3 to 6 times the length of the beans ; flowers few, in 

 heads; legume narrow-linear, cylindric, S to 10-seeded, slightly pubescent. 



Sandy fields. July— Sept. Per. Stem 3 to o feet long. Leaflets lie 2 inches 

 long, % to 1 inch wide. Feduneles 4 to 8 inches long, 4 to 7-flowcred. Calyx with 

 2 lance-oblong nerved traces at base. Cbrcitta purplish; vexillv.m large, roundish. 

 Legumes 2 to 3 inches long, veiy narrow, subfalcate. Seeds woolly. 



CULTIVATED EXOTIC SPECIES. 



4. P, vulgaris, L. Pole Bean. Kidney Bean. 



Stem twining; leaflets ovate acuminate: raceme solitary, shorter than the leaves* 

 pedicels in pairs: calyx as short as its 2 bracts at base; legume pendulous. Seeds 

 reniform. Annual. Native of the East Indies. Universally cultivated in garden* 

 for table use. Flowers mostly white. 



5. P. luxatus, L. Lima Bean. 



Stem twining: leaflets ovate, deltoid, acute; raceme shorter than the leaves. 

 peduncles in pairs ; calyx longer than its 2 bracts at base ; legume short, sword- 

 shaped or lunate ; seeds large, much compressed, purplish-white. Annual. Native 

 of the East Indies. Stem 6 to 8 feet long. Flowers small, white. Valued ift 

 cultivation. 



