LEGUMINOS^. (rULSK FAJIILY.) 97 



15. GLOTTIDIUM, Desv. 



Calyx oampanulate, obliquely truncate, 5 toothed. Vexillum short, reniform. 

 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 abniptly pinnate. Leaf- 

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



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

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

 compressed, 4-sidcd, 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 tlic 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 completehj 2-celk'd by the introversion of the dorsal suture. 



1. A. Canadensis, 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-cclled. — Mountains of 

 Georgia and North Carolina, and northward. June-August. IJ. — Stem 2°-3° 

 high. Leaflets 1' - 1 j' long. Flowers |' long, pale yellow. 



2. A. glaber, Michx. Stem tall, nearly smooth; leaflets 15-2.5, 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. — Dry 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 crescsnt-shapcd, compressed, veiny, partly 2-celled. — Dry sandy bar- 

 rens, Florida, and the lower parts of Georgia. April- June. Ij. — Stems 6'-12' 

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



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