.528 LBGUMINOSAE (PULSE FAMILY) 



lanceolate to linear, acute; peduncles 4-9-flowered ; the yellow flowers 1.5-2 

 cm. long. —Fields and waste places, local, N. B. to N. Y. and Out. June-Aag. 

 (Nat. from Eu.) 



44. ApIOS [Boerh.] Ludwig. GBonNDNUi. Wild Bean 



Calyx somewhat 2-lipped, the 2 lateral teeth being nearly obsolete, "the upper 

 very short, the lower one longest. Standard very broad, reflexed ; the long 

 scythe-shaped keel strongly incurved, at lengtk coiled. Stamens diadelphous. 

 Pod straight or slightly curved, linear, elongated, thickish, many-seeded.^ 

 Perennials, twining and climbing over bushes ; the rootstocks with tuberous 

 enlargements. Leaflets 3-9, ovate-lanceolate, obscurely stipeilate. Flowers 

 in dense and short often branching racemes. (Name from S?rio>', a pair, from 

 the shape of the tubers.) 



L A. tuberbsa Moench. Bootstoeks moniliform, the tuherous enlargements 

 numerous; flowers brown-purple, violet-scented; standard unappendaged at the 

 summit. (A. Apios MaciVI.) — Thickets, N. B. to Fla., Minn., Ka.n., and La. 

 July-Sept. 



2. A. Priceana Robinson. Tuier solitary, very large; flowers pale rose- 

 color; standard hearing a fleshy knob at the apex. — Woods and thickets, 

 Warren Co., Ky. {Miss S. F. Price). July-Sept. 



46. PHASEOL0S [Toum.] L. Kidney Bean 



Caljrx; 5-toothed or 5-oleft, the two upper teeth often shallower. Stamens 

 diadelphous. Stigma oblique or lateral. Pod scythe-shaped, several-many, 

 seeded, tipped with the hardened base of the style. Cotyledons thick and 

 fleshy, rising out of the ground nearly unchanged in germination. — Twining 

 herbs, with pinnately 3-foliolate stipeilate leaves. Flowers racemose, produced 

 in summer and autumn. (The ancient name of the Kidney Bean.) 



1. P. polyst^chyus (L.) BSP. (Wild Bean.) Perennial; leaflets round- 

 ish-ovate, short-pointed ; flowers purple, handsome, but small ; pods drooping, 

 4-5-seeded. (P. perennis Walt.) — Copses, chiefly near the coast, Ct. to Fla. 

 and La.; northw. in Miss, basin to Mo., 111., and, Ind.; reported northw. to 

 Minn, and Neb. July-Sept. 



46. VfGNA Savi 



Habit and floral characters nearly as in Phaseolus, but the keel merely arcu- 

 ate not spirally coiled at the tip. — Twining herbs, with pinnately 3-foliolatfc 

 leaves. (Dedicated to Dominico Vigna, Italian scientist of the 17th century.) 



1. V. SINENSIS (L.) Endl. (Cow Pea.) Am Aral ; leaflets broadly ovate, 

 often very oblique or sometimes slightly contracted above an obtusely hastate 

 base ; flowers few, loosely subcapitate at the end of the long stiflfish peduncle ; 

 pods 1-2 dm. long. ( V. Oatjang Walp.) — Cultivated, and tending to escape. 

 Mo. {Bush), a. to the Gulf. (Introd. from Asia.) 



47. STROPHOSTtLES Ell. 



Keel of the corolla vrith the included stamens and style elongated, strongly 

 incurved, not spirally coiled. Pod linear, terete or flattish, straight or nearly 

 so. Seeds quadrate or oblong with truncate ends, mealy-pubescent or glabrate ; 

 hilum linear. Otherwise as Phaseolus. — Stems prostrate or climbing, more or 

 less retrorsely hairy. Stipules and bracts striate. (Name from <rTpo0i}, a turn- 

 ing, and (ttCXos, a style.) 



1. S. hSlvola (L.) Britton. Annual; stems branched, 0.3-2 m. long; leaf' 

 lets ovate to oblong-ovate (rarely linear-oblong), with a more or less prominent 

 rounded lobe toward the base {the terminal 2-lobed), or some or all often entire, 



