OF NORTH AMERICA. 
75 
stem 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 YERNONIA. 
These two Genera once blended in Serra - 
tula (as so many other G, are in all akin) in- 
clude a crowd of fine plants deserving a good 
monograph. Of Liatris our compilers have 18 
sp. but I know many more, several being yet 
blended as varieties, and as they offer various 
inflorescence must be divided at least in 4 or 5 
subgenera: of Vernonia only 10 are in Eaton, 
my V. albijlora and missurica described atl j. 
1833 are omitted, and I have many more N. sp, 
Vern. longifolia , latifolia , brevifolia , crinita , 
kumilis 4' c - I shall merely add here the subg, 
of Liatris and a few N. sp. 
927. LIATRIS Aiton.— 1 Subg. S cariola 
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. Os mills R. per. hemisph. adpres- 
sed multifl. pappus scabrous not feathered^ow- 
ers corymbose or terminal, root not bulbose— 
4th Rko dills R. per. terete Sflore few scales 
colored, ligulate pappus realy feathery, fl. race- 
mose, root bulbose — 5th Euthyrsis R. per. o- 
blong 5flore, few scales adpressed, flowers thyr- 
soidal, root not bulbose — 0th Corymbilis R. 
