SYNGENESIA NECESSARIA. 



467 



latis, insequaliter den- 



serratis, supra 



tato 



scabris, supeiioribus 



lanceolate, unequally 



toothed and 



serrate. 



scabrous on the upper 



sessilibus; panicula tri- 1 surface, the upper ones 



sessile; panicle Iricho 



chotoma. 



tomous. 



Sp. pi. 2. p. 2333. Pursh, 2. p. 578. Nutt. 2. p. 183. 

 S. Ternifoliunij Mich, 2. p. 146. 



Stem four to six feet high, slightly angled, glabrous, generally purple- 

 The upper leaves generally sessile, the middle and lower ternate, on short 

 petioles, all ovate-lanceolate, serrulate, tapering to an acute point, slightly 

 scabrous and sprinkled with hair on the upper surface, glabrous and reiicu- 

 lately veined on the under. Flowers in a terminal corymb. Scales of the 

 involucrum ovate, rather acute, ciliate, loosely appressed. Florets of the 

 ray about fourteen, about an inch and a half long, bright yellow. 



Grows in the mountainous districts of Carolina and Georgia. 



Flowers August — October. 



4 



11. TERNATUai. 



S. caule tereti, laevi; I Stem terete, smooth; 



foliisterno-verticillatis, leaves verticillate 



by 



petiolatis, lanceolatis, threes, petiolate, lance 



subdenticulatis, scabri- date, slightly toothed, 



usculis, basi ciiiatis, su- ciliate at base, some- 



perioribus sparsis, ses 

 silibus; panicula dicho- 

 toma; calycibus ciiiatis. 



what scabrous, the up- 

 per ones scattered, 

 sessile; panicle dicho- 

 tomous; the calyx frin- 

 ged. 



Sp. pi. 3. p. 2333. Pursh, 2. p. 578. Nutt. 2. p. 183. 



Stem four to six feet high, slightly angled, glabrous. Leaves nearly ses- 

 sile, all narrow lanceolate, very acute, denticulately or sometimes acutely 

 serrate, a little hairy and scabrous on the upper surface, the under reticu- 

 jately veined and hairy along the midrib and larger veins. Flowers in a 

 loose terminal corymb. Scales of the involucrum ovate, rather acute, cili- 

 ate, loosely appressed. Ploreta of the ray twelve to fourteen, about an inch 

 and a half long. ' 



1 am not satisfied that I have accurately understood these two last species. 



nor ES farac n>t7 ^r^^^Xr^^^.. « \ .i .. .i . _^_- _..i .:.. ' 



