PULSE FAMILY. 127 



T. Carolinianum, Michx. CAROLINA C. Fields and pastures S. ; a 

 little downj% spreading in tufts 5'-10' high ; leaflets small ; stipules 

 broad ; heads small ; corolla purplish, hardly longer than the lanceolate 

 calyx-teeth. 2/ 



T. ripens, Linn. WHITE C. Smooth ; stems creeping ; leaflets obcor- 

 datc ; petioles and peduncles long and slender ; stipules narrow ; heads 

 loose, umbel-like ; white corolla much longer than the slender calyx-teeth. 

 Fields, etc., everywhere. 2/ This is the SHAMROCK of Ireland. 



T. hybridum, Linn. ALSIKE C. Like the last, but the taller stems 

 erect or ascending, not rooting at nodes ; flowers rose-tinged. Becoming 

 common. Eu. 2JJ 



T. incarndtum, Linn. CRIMSON C. Hairy, stem erect, l-2 high ; 

 leaflets obovate or nearly round; stipules broad, with broad leafy tips; 

 flowers crimson, scarlet, or (rarely) cream-color, ^'long; heads stalked, 

 terminal, ovoid, at length cylindric. Grown in Middle States and S. 



* * * Flowers short-pediceled (reflexed when old), in round heads, pro- 

 duced through late summer and autumn; corolla yellow, turning chest- 

 nut-brown, dry and papery with age. (T) 



T. agrarium, Linn. YELLOW C., HOP C. Smoothish, 6'-12' high; 

 leaflets obovate-oblong, all nearly sessile on the end of the petiole ; stip- 

 ul 'S narrow, cohering with petiole half its length. Fu. Eastward. 



T. procumbens, Linn. Low HOP C. 3'-6' high, spreading, rather 

 downy ; leaflets wedge-obovate, notched at the end, the lateral at a little 

 distance from the other ; stipules ovate, short. Eu. Common. 



15. PETALOSTEMON, PRAIRIE CLOVER, (Greek: petal, sta- 

 men.) In prairies, pine barrens, etc. W. and S. ; flowers never 

 yellow, in terminal spikes ; summer. % 



* Leaflets 5-9 ; spikes long-peduncled. 



P. violaceus, Michx. Smoothish, l-2 high ; leaflets mostly 5, 

 narrow-linear ; spikes globose-ovate, oblong-cylindric with age ; flowers 

 rose-purple ; calyx silky, hoary. Prairies W. 



P. candidus, Michx. Smooth, 2-3 high ; leaflets 7-9, lanceolate or 

 linear-oblong ; spikes oblong, cylindric with age ; bracts awl-pointed. 



* * Leaflets 13-29 ; spikes short peduncled. 



P. villdsus, Nutt. Soft, downy, or silky all over; leaflets 13-17, 

 linear or oblong ; spikes cylindric ; corolla rose-color. Wis. and W. 



P. folidsus, Gray. Smooth; leaflets 15-29, linear-oblong; spikes 

 cylindric; corolla rose-color. 111., Tenn. 



16. DALEA. (For an English botanist, Sa..,uel Dale.) 



D. alopecuroldes, Willd. Stem erect, l-2 high ; leaves smooth, of 

 m.any linear-oblong leaflets ; flowers whitish, small, in a dense silky spike 

 in summer. Alluvial soil, Ala., far N. W. 



17. AMORPHA, FALSE INDIGO. (Greek: wanting form, from the 

 absence of 4 of the petals.) Leaflets usually with little stipels. 

 Flowers summer: # pods Im8eeded . leaflets smalL 



A. cane"scens, Nutt. LEAD PLANT. l-3 high, hoary with soft 

 down; loaves sessile, of 29-51 elliptical leaflets, smoothish above when 

 old ; flowers violet-purplo in late summer. Prairies and rock^ banks, 

 W. and S. W. 



