•r NORTH XM£RICA. 7Jk 



sjem terete corymbose, leaves sessile oblong 

 linear acute, the upper alternate, corymbs fas- 

 tigiate foliose multiflore, peduncles and perian- 

 thes pubescent, segments lanceolate acute pap- 

 pus of 3 bristles — from Texas or Louisana found 

 by Binder, a tall plant probably perennial,leaves 

 short uncial, flowers pale incarnate and hand- 

 some profuse. 



LIATRIS and VERNONIA. 



These two Genera once blended in Serra^ 

 tula (as so many other G, are in all akin) in* 

 elude a crowd of fine plants deserving a good 

 monograph. Of Liatris our compilers have 18 

 gp. but I know many more, several being yet 

 blended as varieties, and as they offer various 

 iliflorescence must be divided at least in 4 or 5 

 subgenera: of Vernonia only 10 are in Eaton* 

 my F. albiflora and missurica described atl j. 

 1833 are omitted, and I have many more N. sp. 

 Vern* longlfolia, Ifitifolia, brevifolia, crinita^ 

 humilis Sfc. I shall merely add here the subg* 

 of Liatris and a few N. sp. 



927. LIATRIS Alton.— 1 Subg. Scari^Za 

 Raf. perianthe squarrose ovate or hemisphe- 

 rical, multiflore, pappus hardly plumose, flowers 

 chiefly racemose or spicate, root bulbose — 2d. 

 Teretiola perianthe oblong or terete imbricate 

 adpressed, multiflore, flowers terminal few, root 

 bulbose — 3d. Osmills R. per. hemisph. adpres- 

 sed multifl. pappus scabrous not feathered, flow- 

 ers corymbose or ternjinal, root not bulbose — 

 4th RhodUis R. per. terete 5 flora few scales 

 colored, ligulate pappus realy feathery, fl. race- 

 mose^ root bulbose — 5th Enthjirsis R. per. o- 

 blong 5flore, few scales adpressed, flowers thyr- 

 soidal^ root not bulbose — 6th Corymbilis R. 



