440 , S¥NGENESIA FRUSTRANEA. 



oris foliolis ciliato ser-l exterior involucrum 

 ratis; radiis integris; ciliate, serrate, florets 

 seminibus cuneatis, 2 of the ray entire; seeds 

 4 dentatis. I cuneate, 2 — 4 toothed. 



■ 



Mich. 2. p. 139- WiUd. 2. p. 2252. Pursh, 2- p. 568. Nutt. 2. p. 

 180. 



Root perennial, (biennial, Pursh.) Stem two to three feet high, glabrous, 

 branching towards the summit. Leaves opposite, somewhat pinnate, the 

 leaflets or segments five to seven, generally more or less notched, thin, gla- 

 brous. Flowers on peduncles, opposite and terminal, the upper divisions 

 sometimes dichotomous. Exterior involucrum eight-leaved^ leaves oblong, 

 obtuse, sometimes obovate, ciliate; the interior eight-leaved, leaves lanceo- 

 late, striate, coloured, particularly along the margin. Florets of the ray 

 eight, lanceolate, yellow, entire; of the disk yellowish. Seeds oblong, com- 

 pressed, two to four toothed. Chaff of the receptacle linear-lanceolate. 



This species appears to vary much, perhaps more than one is now co- 

 vered under this name. 



In specimens sent me from Boston by Dr. Bigelow, the stem is square, 

 the leaflets generally seven, very narrow, (linear,) deeply notched, almost 

 pinnatifid, the flowers large. In specimens sent me from New-York by Dr. 

 Torrey, the stem is nearly round or very obtusely angled, the leaflets five, 

 thin, narrow lanceolate, strongly toothed, the flowers smaller. 



Grows in wet soils, in the upper districts of Carolina. Mich. 



Flowers August — October. 



12. MiTis. Mich. 



_■ 



C glaberrima; foliis 



bipiniiatifidis, pinnis 

 linearibus, serrulatis; 

 involucri exterioris fo- 

 liolis hnearibus serru- 



Very glabrous; 



leaves bipinnatifid^ the 

 segments hnear, serru- 

 late; leaves of the ex- 

 terior involucrum line 



latis; seminibus ob- ar, serrulate; seeds 



longis biaristatis. | oblong, 2-awned. 



Mich 



150. 



I 



. 2. p. 140. Sp, pi. 3. p, 2253. Pursh, 2. p. 569^ Nutt. 2- p- 



C Coronata, Walt. 2. p. 15 



Pursh.") Stem three 



gled, with very numerous brachiate branches. Leaves decussate, bipmn^- 

 tlild, the segments slightly scabrous on the upper surfa'-^- the uppennos 

 sometimes simply three-parted, Floicers in a loose 



tern>inal 



