LEGUMIXOS^. (pulse FAMILY.) 99 



* * Fruiting calyx refiexed. 



3. T. reflexum, L. (Buffalo Clover.) Pubesceut ; stems ascend- 

 ing ; leaflets roundish or ohcordate, toothed, the uppermost obloug; heads 

 globose; calyx tube very short, the subulate teeth long and hairy ; vexillum 

 broadly ovate, purple; the wings and keel white; legume 3-5-seeded. — 

 Waste places and pastures. April - May. (T) and (2) — Stems 6'- 1 2' long. 

 Heads large. 



4. T. stoloniferum, Muhl. Very near the preceding, but smooth 

 throughout ; stems creeping ; leaflets broadly ohcordate ; heads more loosely 

 flowered ; legumes 2 - 3-seeded. — Open woods and pastures, Tennessee. 

 May - June. 



5. T. repens, L. (White Clover.) Smooth; stems creeping ; leaflets 

 roundish or ohcordate; heads globose, long-peduncled ; calyx teeth short; 

 flowers white; legume 4-.seeded. — Pastures aud around dwellings. Intro- 

 duced. May. ^ — Stems 6' - 1 2' long. 



6. T. procumbens, L. Pubescent ; stems slender, erect or procumbent ; 

 leaflets small, thin, obovate or ohcordate, toothed, the middle one stalked ; 

 heads small, ovate ; flowers yellow ; legume 1-seeded. — Waste places ; more 

 commou in the upper districts. Introduced. (T) — Stems 6'- 12' long. 



7. T. Carolinianum, Michx. Pubesceut; stems tufted, prostrate ; leaf- 

 lets small, ohcordate, slightly toothed ; heads roundish, long-peduncled ; 

 flowers white, tinged with purple ; vexillum acute ; legume 4-seeded. — Fields 

 aud pastures. March -April. ^ — Stems 6' -10' long, in .shady places 

 erect. , 



6. HOSACKIA, Dougl. 



Calyx 5-cleft. Vexillum as long as the keel and spreading wings. Stamens 

 diadelphous (9 & 1). Legume cylindrical or compressed, smooth, wingless, 

 many-seeded. — Herbs. Leaves trifoliolate or pinnate. Stipules mostly mi- 

 uute and gland-like. Peduncles 1 -several-flowered. 



1. H. Purshiana, Benth. Hairy; stem much branched ; leaves trifolio- 

 late, with oblong leaflets; peduncle 1-flovvered, longer than the leaves; keel 

 acute ; bracts simple ; legume linear, nearly terete. — North Carolina. — Stem 

 12'- 15' high. Flowers rose-color. 



7. PSORALEA, L. 



Calyx campanulate, 5-cleft, with the lobes acute. Stamens diadelphous or 

 partly monadelphous : half of the anthers often imperfect. Legume often 

 wrinkled, 1-seeded, indehiscent, included in the calyx. — Perennial usually 

 glandular herbs. Stipules cohering with the petioles. Flowers axillary or 

 terminal, purplish or white, racemose or spiked. 



* Leaves l-3-foIiolate. 



1. P. virgata, Nutt. Smoothish; stem virgate, sparingly branched; 

 leaves very remote, 1- (or the lowest 2-3-) foliolate ; leaflets linear or oblong- 

 linear, obtuse, the lower ones broader and long-petioled ; stipules setaceous ; 

 peduncles much shorter than the leaves; spikes dense, cylindrical; bracts 



