LEGUMINOS^E. (PULSE FAMILY.) 97 



15. GLOTTIDIUM, Desv. 



Calyx campanulate, obliquely truncate, 5-toothed. Vexillum short, uniform. 

 Stamens diadelphous (9 & 1). Style short, incurved at the apex. Stigma 

 acute. Legume oblong, stipitate, compressed ; the membranaceous endocarp 

 at length separating from the coriaceous epicarp, and enclosing the two oblong 

 seeds. A tall smooth-branching annual, with abruptly pinnate leaves, and yel- 

 low flowers in axillary often compound racemes. 



1. G. Floridanum, DC. (Sesbania vesicaria, Spreng.) Damp soil, 

 Florida to South Carolina, and westward. August. Stem 2 - 8 high. Leaf- 

 lets numerous, oblong-linear. Legume 1 ' - 2' long. Plant yellowish-green. 



16. SESBANIA, Pers. 



Calyx 2-bracted, campanulate, equally 5-toothed. Vexillum roundish. Keel 

 obtuse. Stamens diadelphous (9 & 1) ; the tube toothed at the base. Legume 

 slender, elongated, knotted. Herbs or shrubs. Leaves abruptly pinnate. Leaf- 

 lets numerous. Flowers yellow or reddish, in axillary racemes. 



1. S. macrocarpa, Muhl. Annual, smooth ; leaflets oblong- linear, ob- 

 tuse, mucronatc ; racemes shorter than the leaves, 1 - 4-flowered ; legume curved, 

 compressed, 4-sided, many-seeded. Swamps, Florida to South Carolina, and 

 westward. August and September. Stem 5 -12 high. Legume 8' -12' 

 long, pendulous. Flowers yellow and red, dotted with purple. 



17. ASTRAGALUS, L. MILK-VETCH. 



Calyx 5-toothed ; the 2 upper teeth separated. Vexillum as long as the wings 

 and obtuse keel. Stamens 10, diadelphous. Legume commonly turgid, few - 

 many-seeded, usually partly or completely 2-celled by the introversion of one or 

 both of the sutures. Herbs with unequally pinnate leaves, and axillary spiked 

 or racemose flowers. 



* Legume partly or completely 2-celled by the introversion of the dorsal suture. 



1. A. Cauadensis, L. Tall, pubescent ; leaflets 21 -31, oblong, obtuse ; 

 stipules ovate, clasping ; peduncles as long as the leaves, closely many-flowered ; 

 calyx-teeth subulate; legume inflated, oval, terete, 2-celled. Mountains of 

 Georgia and North Carolina, and northward. June-August, ty Stem 2-3 

 high. Leaflets !'-!' long. Flowers f ' long, pale yellow. 



2. A. glaber, Michx. Stem tall, nearly smooth; leaflets 15-25, oblong- 

 linear, pubescent beneath ; stipules minute, spreading ; spikes longer than the 

 leaves, loosely many-flowered ; calyx-teeth broad and short ; legume curved, ob- 

 long, flattened edgewise, 2-celled. Drv pine barrens, Florida to North Caro- 

 lina. April. U Stem 2 high. Leaflets 6" - 8" long. Flowers white. 



3. A. obcordatUS, Ell. Smoothish ; stems prostrate ; leaflets small, 

 17-25, obcordate ; peduncles as long as the leaves, loosely 8-15-flowered; 

 legumes crescent-shaped, compressed, veiny, partly 2-celled. Dry sandy bar- 

 rens, Florida, and the lower parts of Georgia. April - June. 1J. Stems 6' -1C' 

 long. Leaflets 3" - 4" long. Flowers pale purple. 



