162 LEGUMINOSiE. Apios. 



1. Apios tuberosa, Moench. Ground-nut. 



Moench, I. c. ; Pursh, ft. 2. p. 273 ; Nutt. gen. 2. p. 1 1 3 ; Ell. sk. 2. p. 235 ; DC. prodr. 

 2. p. 391 ; Torr. compend. p. 270 ; Hook. fl. Bor.-Am. 1. p. 161 ; Darlingt.fl. Cest. p. 428; 

 Beck, hot. p. 91 ; Torr. ^ Gr. fl. N. Am. 1. p. 282. Glycine Apios, Linn. ; Bol. mag. 

 t. 1 198 ; Miclur. fl. 2. p. 83 ; Bigel. fl. Bost. p. 277. 



Root producing fleshy tubers about the size of a chestnut, arranged at intervals like beads. 

 Stem 4-8 feet long, climbing over bushes, nearly smooth. Leaflets ovate-lanceolate, 2-3 

 inches long, acuminate, each articulated to the common petiole by a short hairy stalk. Ra- 

 cemes shorter than the leaves. Flowers in crowded oval racemes, rather fragrant, of a dull 

 purple mixed with green. Legume 3-5 inches long, 8 - 10-seeded. Seeds dark purple : 

 hilum very small. 



Low grounds and moist thickets ; rather common in many parts of the State. Fl. August. 

 Fr. September. The tubers are farinaceous, and would probably increase in size and quality 

 by cultivation. 



Subtribe 2. Glycines, Benih. Ovary with several ovules. Inflorescence racemose, with 

 the pedicels more or less aggregated on small alternate knobs. Bracteoles very 

 small, often deciduous. Vexillum usually with two small appendages at the 

 base. Style not indurated. Cotyledons flat, foliaceous in germination. 



6. GALACTIA. P. Browne ; Endl. gen. 6653. milk pea. 



[ Named from the Greek, gala, milk ; some of the species yielding a milky juice when wounded.] 



Calyx 4-cleft ; segments acute, of nearly equal length ; the upper one broadest. Vexillum 

 incumbent, broad : keel-petals slightly cohering towards the apex. Legume compressed, 

 linear, many-seeded. Seeds orbicular or somewhat reniform. — Twining or prostrate (rarely 

 erect) herbaceous plants. Leaves pinnately trifoliolate. Racemes axillary, usually loosely 

 flowered. Flowers purplish. 



1. Galactia glabella, Michx. Smooth Milk-vine. 



Stem prostrate, nearly smooth ; leaflets elliptical-oblong or ovate-oblong, obtuse, emarginate, 

 smooth above, slightly hairy underneath ; racemes at length a little longer than the leaves ; 

 flowers approximated, distinctly pedicellate ; calyx nearly smooth ; legumes somewhat hairy. 

 — Michx. fl. 2. p. 62 ; Nutt. gen. 2. p. 117; Ell. sk. 2. p. 239 ; DC. prodr. 2. p. 238 ; 

 Beck, bot. p. 81 ; Darlingt. fl. Cest. p. 409 ; Torr. 4- Gr. fl. N. Am. 1. p. 287. Glycine 

 regularis, Linn.; Willd. sp. 3. p. 1049. 



Root fusiform. Stems numerous, 2 — 4 feet long, spreading on the ground, or sometimes 

 twining, slightly pubescent. Leaflets about an inch and a half long, often somewhat cordate 



