57 FLORA. 



2. Apios Priceana Robinson. PRICE'S GROUND-NUT. Stem soon glabrous. 

 Stipules 6 mm. long. Leaflets 3-9; racemes dense, mostly 2 or 3 together in the 

 axils; standard 2.5 cm. long; pods 12-15 cm - l n g- Root solitary. Ky. 



42. GALACTIA P. Br. 



Perennial vines (sometimes erect and shrubby), mainly with pinnately 3-folio- 

 late leaves, small and deciduous stipules, and purple or violet axillary racemose 

 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 i). Ovary nearly 

 sessile; ovules oo ; 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 having 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. i. G. regularis. 



Finely downy-pubescent ; pods very downy. 2. G. volubilis. 



1. Galactia regularis (L.) B. S. P. MILK PEA. (I. F. f. 2228.) Prostrate; 

 stems matted, 3-6 dm. long. Leaflets elliptic or ovate-oblong, obtuse and often 

 emarginate, rounded or slightly cordate at the base, 2-4 cm. long, 8-18 mm. wide; 

 peduncles longer than the petioles and generally exceeding the leaves, erect, 4-10- 

 flowered; flowers reddish purple, 12-17 mm - long; pods 2.5-4 cm. long, 4-7- 

 seeded. In dry sandy soil, N. Y. and Penn. to Fla., Kans. and Miss. July- Aug. 



2. Galactia volubilis (L.) Britton. DOWNY MILK PEA. (I. F. f. 2229.) 

 Similar to the preceding. Leaflets ovate, elliptic or oval, sometimes emarginate, 

 rounded or slightly cordate at the base, 2-4 cm. long, 11-25 mm - wide; racemes 

 rather loose; flowers purplish, about 12 mm. long; pod 2.5-4 cm. long. In dry 

 soil, N. Y. to Fla., Penn., Ky., Kans. and Tex. June-July. 



43. DOLICHOLUS Medik. 

 [RHYNCHOSIA Lour.] 



Perennial twining trailing or erect herbs, with pinnately i-3-foliolate leaves, 

 and yellow mostly axillary and racemose flowers. Leaflets generally punctate with 

 resinous dots, not stipellate ; calyx 4-5-lobed, somewhat 2-lipped; standard obo- 

 vate or orbicular, spreading or reflexed; wings narrow; keel incurved at the apex 

 or falcate; stamens diadelphous (9 and i); ovary nearly sessile; ovules 2, rarely i; 

 style filiform ; pod flat, oblong or obliquely orbicular, 2-valved, i-2-seeded. [Greek, 

 diminutive of DolichosJ\ About 100 species, natives of warm and temperate 

 regions. In addition to the following, some 9 others occur in the Southern States. 



Leaflets 3. 



Stem twining or trailing. 



Racemes shorter than the leaves ; flowers 6-8 mm. long. i. D. tomentosus. 

 Racemes longer than the leaves ; flowers about 12 mm. long. 



2. D, latifolius. 



Stem erect, 3-7.5 dm. high. 3. D. erectus. 



Leaflet solitary, very broad ; plant low, erect, 8-23 cm. high. 4. D. simplicifolius, 



1. Dolicholus tomentosus (L.) Vail. TWINING DOLICHOLUS. (I. F. f. 

 2230.) Pubescent with spreading hairs, 3-9 dm. long. Stipules ovate, acute, 

 sometimes wanting; petioles shorter than the leaves; leaflets 3, or the lowest leaves 

 i-foliolate, ovate, orbicular or broader than long, obtuse but generally pointed, 2.5- 

 5 cm. long ; racemes short-peduncled or sessile, 2-8-flowered ; flowers 6-8 mm. 

 long; calyx deeply 4-parted, the upper lobe 2-cleft; pod oblong, acute, pubescent, 

 16-19 nim. long. In dry sandy soil, Va. to Fla., west to Tex. May-July. 



2. Dolicholus latifolius (Nutt.) Vail. PRAIRIE DOLICHOLUS. (I. F. f. 2231.) 

 Softly pubescent; stem angled, sometimes 1.5 m. long. Stipules lanceolate or 

 wanting; petioles 2.5-8 cm. long; leaflets broadly ovate or somewhat rhomboid, 

 or the end one orbicular, 2.5-8 cm. long, mostly obtuse; racemes elongated, some- 

 times 3 dm. long in fruit, many-flowered; calyx about 12 mm. long, deeply parted, 



