530 LEGUMINOSAE (PULSE FAMILY) 



none or rudimentary, and few free stamens, but fruitful ; reduced flowers of 

 sli<^htly different form sometimes also on aerial racemes. Calyx about equally 

 4(rareiy 5) -toothed. Stamens diadelphous. Tods of the upper flowers, when 

 formed, somewhat scimiter-shaped, stipitate, 3-4-seeded ; of the lower ones 

 commonly subterranean and fleshy, obovate or pear-shaped, ripening usually 

 but one large seed. — Low and slender perennials; the-twining stems clothed 

 with brownfsh hairs. Leaves pinnately 8-foliolate ; leaflets rhombic-ovate, sti- 

 pellate. Petals purplish. Bracts persistent, round, partly clasping, striate, as 

 well as the stipules. (Name from d/xcpl, both, and Ko/)7r6s, fruit, in allusion to the 

 two kinds of pods.) Falcata Gmel. 



1. A. monoica (L.) Ell. Leaflets thin, 1.3-5 cm. long; racemes nodding; 

 calyx of the upper flowers 4 mm. long ; the ovary glabrous except the mostly 

 appressed hairy margin ; pod 2.5 cm. long ; ovary and pod of the rudimentary 

 flowers hairy. (Falcata comosa Am. auth.; Glycine comosa L. ?) — Rich damp 

 woodlands, common. Aug., Sept. 



2. A. Pitcheri T. & G. Leaflets usually 5-10 cm. long ; rhachis of the ra- 

 cemes usually villous ; calyx 6 mm. long, the teeth acuminate ; pod sometimes 

 hairy on the valves, the margins retrorse-hispid. (Falcata Ktze.) — Rich woods 

 and thickets, near the coast, Mass. to D. C; and from w. N. Y. to S. Dak., s. to 

 La. and Tex. July-Sept. 



52. GALACTIA p. Br. Milk Pea 



Keel scarcely incurved. Stamens diadelphous or nearly so. Pods linear, flat, 

 several-seeded (a few of them rarely subterranean and fleshy or deformed). — 

 Low mostly prostrate or twining perennial herbs. Leaflets usually 3, stipellate. 

 Flowers in somewhat interrupted or knotty racemes, purplish ; in summer. 

 (Name from ydXa, milk; some species being said to yield a milky juice, which 

 is unlikely.) n- • i 



1. G. regularis (L.) BSP. Steins nearly smooth, prostrate; leaflets elhptical 

 or ovate-oblons:, sometimes slightly hairy beneath ; racemes short, 4-8-flowered ; 

 pods somewhat hairy. {G. glabella Michx.) —Sandy woods, near the coast, 

 s. N. Y. to Fla. and Miss.; locally northw. in Miss, basin to Kan. July, Aug. 



2. G. volubilis (L.) Britton. Steins decumbent and somewhat twining, 

 hoary-pubescent ; leaves glabrous above, soft-downy and hoary beneath; leaflets 

 oval; racemes many-flowered; pods very dovmy. {G. pilosa Ell.)— Dry soil, 

 near the coast, L. I. to Fla. and Tex. Var. mississippiensis Vail. Leaves 

 pubescent above. — Miss, basin, from Mo. south w. 



53. RHYNCH6SIA Lour. 



Stamens diadelphous. Ovules only 2. Pod 1-2-seeded, flat, 2-valved.— 

 Perennial herbs, with leaves pinnately 3-foliolate, or with a single leaflet, not 

 stipeUate. Flowers yellow, racemose or clustered. (Name from p^yxos, a beak, 

 from the shape of the keel.) 



* Stem elongated, trailing or twining ; leaflets 3. 



1. R. tomentbsa (L.) II. & A. Trailing and twining ; the stem and leaves 

 more or \ii.^?> pubescent with spreading hairs ; leaflets 3, roundish or ronnd-rhom- 

 bic, acute or acutish ; racemes short, few-flowered,- almost sessile; calyx 8-10 

 nun. long, about equaling the corolla, 4-parted, the upper lobe 2-cleit ; pod 

 oblong. — Dry soil, Va. to Fla. and Tex. 



2. R. latifblia Nutt. Soft-pubescent ; leaflets large, ovate, rounded at the 

 base ; racemes long, many-flowered, equaling or usually exceeding the leaves ; 

 calyx-lobes lance-linear, 1.1-1.3 cm. long, equaling the corolla. —Mo. {Bush) 

 to La. and Tex. 



* * Erect ; stem shorter. 



3. R. er6cta (Walt.) DC. Stem (3-6 dm. high) and leaves more or less tJ- 

 mentose ; leaflets 3, oval to oblong, obtuse or acutish ; racemes short and 

 shortlv pedunculate. — Dry soil, Del. to Fla. and Miss. 



