LEGUMIXOS.E. (PULSE FAMILY.) 99 



* * Fruiting calyx reflexed. 



3. T. reflexum, L. (BUFFALO CLOVER.) Pubescent ; stems ascend- 

 ing ; leaflets roundish or obcordate, 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) aud @ Stems 6'- 12' long. 

 Heads large. 



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

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

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

 May - June. 



5. T. repens, L. (WHITE CLOVER.) Smooth; stems creeping ; leaflets 

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

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

 duced. May. y. Stems 6' - 1 2' long. 



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

 leaflets small, thiu, obovate or obcordate, toothed, the middle one stalked ; 

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

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



7. T. Carolinianum, Midix. Pubescent; stems tufted, prostrate ; leaf- 

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

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

 and 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- 

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



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

 late, with oblong leaflets; peduncle 1 -flowered, 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-foliolate. 



I . 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 



