440 
STTNGENteSIA FRUSTRANEA. 
oris foliolis ciliato ser- 
ratis; radiis integris; 
serainibus cuneatis, 2 
— 4 dentatis. 
exterior involucrum 
ciliate, serrate, florets 
of the ray entire; seeds 
cuneate, 2 — 4 toothed. 
Mich. 2. p. 139. Willd. 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 
bipinnatifidis, pinnis 
linearibus, serrulatis; 
involucri exterioris fo- 
liolis linearibus serru- 
latis; seminibus ob- 
longis biaristatis. 
Very glabrous; 
leaves bipinnatifid, the 
segments linear, serru- 
late; leaves of the ex- 
terior involucrum line- 
ar, serrulate; seeds 
oblong, 2-awned. 
Mich. 2. p. 140. Sp. pL 3. p. 2253. Pursh, 2. p. 569. Nutt. 2. p. 
150. 
C. Coronata, Walt. 2. p. 15. 
(Root biennial, Pursh.) Stem three to four feet high, obtusely four an- 
gled, with very numerous brachiate branches. Leaves decussate, bipinna- 
tifid, the segments slightly scabrous on the upper surface, the uppermost 
sometimes simply three-parted. Flowers in a loose terminal panicle. 
