530 LEGUMINOSAE (PULSE FAMILY) 



none or rudimentary, and IV\\ tree stamens, but fruitful ; reduced flowers of 

 slightly different form sometimes also on aerial racemes. Calyx about equally 

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

 formed, somewhat scimiter-shaped, stipitate, 3-4-sceded ; 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 brownish hairs. Leaves pinnately 3-foliolate ; leaflets rhombic-ovate, st.i- 

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

 well as the stipules. (Name from d/j.(pl, both, and /ca/>7r6s, fruit, in allusion to the 

 two kinds of pods.) FALCATA Gmel. 



1. A. monofca (L.) Ell. Leaflets thin, i.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. Pitchdri 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 yd\a, milk; some species being said to yield a milky juice, which 

 is unlikely.) 



1. G. regularis (L.) BSP. Stems nearly smooth, prostrate; leaflets elliptical 

 or ovate-oblong, 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. Stems decumbent and somewhat twining, 

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

 oval; racemes many-flowered; pods very downy. (G-. pilosa Ell.) Dry soil, 

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

 pubescent above. Miss, basin, from Mo. southw. 



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 

 stipellate. Flowers yellow, racemose or clustered. (Name from /M-yx 05 ? 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 less pubescent with spr<< liny huh'* ; (<-i(tlets 3, roundish or rottnd-rh<nn- 

 /</>, acute or acutish ; racemes short, few-flowered, almost senile; calyx 8-10 

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

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



2. R. latif&lia Nutt. Soft-pubescent ; h.ijh-ts large, ovate, rounded at the 

 base; racnm-H hint/, many-flowered, equaling or usually exceeding the leaves; 

 calyx-lubes lance-linear, 1.1-1.3 cm. long, equaling the corolla. Mo. (Btixh) 

 to La. and Tex. 



* * Erect; stem short- /. 



3. R. er6cta (Walt.) DC. Stem (3-0 dm. high) and leaves more or less to- 

 mentnM' ; h-ujlcAs 3, oval to oblong, obtuse or acutish ; racemes short and 

 shortly pedunculate. Dry soil, Del. to Fla. and Miss. 



