[Vor. II. PEA FAMILY. 335 
1. Apios Apios (1...) MacM. Ground- 
nut. (Fig. 2227.) 
Glycine Apios L. Sp. Pl. 753. 1753- 
Apios tuberosa Moench, Meth. 165. 1794. 
Apios Aptos MacM. Bull. Torr. Club, 19:15. 1892. 
Slender, pubescent or glabrate, climbing over 
bushes to a height of several feet. Rootstock 
tuberous; stipules subulate, 1/”-2’’ long, decidu- 
ous; leaves petioled; leaflets 5~7 (rarely 3), ovate 
or ovate-lanceolate, acute or acutish at the apex, 
rounded at the base, 1/—3’ long; racemes axillary, 
often compound; peduncles shorter than the 
leaves; flowers numerous, brownish purple, odor- 
ous, about 6/’ long; rachis of the inflorescence 
knobby; pod linear, straight or slightly curved, 
pointed, 2’-414’ long, about 2144’’ wide, many- 
seeded, its valves rather coriaceous. 
In moist ground, New Brunswick to Florida, west 
to western Ontario, Minnesota, Kansas and Louisi- 
ana. Stem with milky juice; tubers edible. July-— 
Sept. 
42. GALACTIA P. Br. Civ. & Nat. Hist. Jamaica, 298. 1756. 
Prostrate or climbing perennial vines (sometimes erect and shrubby), mainly with pin- 
nately 3-foliolate leaves, small and deciduous stipules, and purple or violet axillary race- 
mose flowers. Calyx 4-lobed, bracteolate, the lobes acute, often as long as the tube. 
Standard orbicular or obovate. Wings narrow, obovate, adherent to the narrow, nearly 
straight keel. Stamens diadelphous or nearly so (9 and 1); anthers all alike. Ovary 
nearly sessile; ovules »; style filiform, not bearded. Pod linear, straight or slightly 
curved, usually flattened, 2-valved, several-seeded. Fleshy few-seeded pods are sometimes 
produced from subterranean apetalous flowers. [Greek, milk-yielding, many of the species 
haying milky sap. ] 
About 50 species, natives of warm and temperate regions, most abundant in America, Besides 
the following, about 15 others occur in the southern and southwestern states. 
Nearly glabrous throughout; pods slightly pubescent. 1. G. regularis. 
Finely downy-pubescent; pods very downy. 2. G. volubilis. 
1. Galactia regularis (1,.) B.S.P. 
Milk Pea. (Fig. 2228.) 
Dolichos regularis I, Sp. Pl. 726. 1753. 
Galactia glabella Michx. F1. Bor. Am. 2:62. 1803. 
Galactia regularis B.S.P. Prel. Cat. N.Y. 14. 1888. 
Prostrate, glabrous or sparingly appressed- 
pubescent;stems matted, usually branching, 1°— 
2° long, Stipules minute, deciduous; petioles 
shorter than the leaves; leaflets elliptic or ovate- 
oblong, obtuse and often emarginate at the 
apex, rounded or slightly cordate at the base, 
%4/-1%4’ long, 4/’-9/’ wide; peduncles longer 
than the petioles and generally exceeding the 
leaves, erect, 4-10-flowered; racemes loose or 
dense; pedicels about 114’’ long; flowers red- 
dish-purple, 6’’-8’’ long; pods linear, straight, 
or slightly curved, slightly pubescent, 1/-1 14’ 
long, 2’’ wide, 4—7-seeded. 
In dry sandy soil, southeastern New York, 
Pennsylvania, pine barrens of New Jersey, south 
to Florida and Mississippi. July-Aug. 
