PULSE FAMILY. 127 



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

 little downj', spreading in tut'ts 5'-10' high ; leaflets small ; stipules 

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

 calyx-teeth. 2/ 



T. rfepens, Linn. White C. Smooth ; stems creeping ; leaflets obcor- 

 date ; 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. 2/ 



T. incarnatum, 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. (i) 



* * * 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. agrarium, Linn. Yellow C, Hop C. Smoothish, 6'-12' high; 

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

 ules narrow, cohering with petiole half its length. Eu. 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. "21 



* Leaflets 5-9 ; spikes long-peduncled. 



P. viol^ceua, Michx. Smoothish, l°-2° high ; leaflets mostly 6, 

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

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



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

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



Prairies W. ^ ^ , o ^^ ., , j , j 



* » Leaflets 13-29 ; spikes short peduncled. 



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

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



P. foli68U8, Gray. Smooth; leaflets 15-29, linear-oblong; spikes 

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



16. DALE A. (For an English botanist, Samuel Dale.) 



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

 many linear-oblong leaflets ; flowers whitish, small, in a dense silky spike 

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



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

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

 Flowers summer. ^ p^^^ Lseeded ; leaflets small. 



A. can^Bcens, Nutt. Lead Plant. 1°-3° high, hoary with soft 

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

 old ; flowers violet-purple in late summer. Prairies and rocky banks, 

 W. and S. W. 



