OF NORTH A MERIC A. 
85 * 
with plumose seeds are my G. Ptiloria of 1833 
Atlantic Journal. 
954. OPICRINA Raf. diff. from Narb&lia, 
perianthe 10-15 segments commonly hirsute, 
multiflore, with 20 to 30 flowers indefinite — 
these are taller plants, exuding a milk intensely 
bitter, producing a bitter opium which the name 
implies ; the types are Op. crepidinea and the 
next. 
955. Opicrina lAti folia Raf. Prenanthes 
opicrina 1822. smooth, stem grooved ramose, 
lower leaves with winged petiols cordate or 
sagittate ovate, sinuate angular, upper ovate re- 
pand or denticulate ; flowers in racemose pan- 
icles fasciculate, perianthes nodding hirsute, 
pappus fulvous — in Central Kentucky rich 
woods, 5 to 6 feet high, leaves 4 to 10 inches 
long, flowers large ochroleucous, perianthes 
fuscate. Op. crepidinea differs by leaves ses- 
sile oblong lanceolate unequaly dentate, Op. 
angustif alia would be a better name. 
956. SITILIAS Raf. perianthe terete dou- 
ble multiflore both multipartite, external shorter 
adpressed, phoranthe naked, seeds smooth lin- 
ear oblong grooved, pappus long stipulate sim- 
ple capillary silky lulvous.— Caulescent, flow - 
ers few.- — This G. differs from Leontodon by 
pappus not plumose, from Borkhausia by terete 
adpressed perianthe and costate seeds. It was 
shuffled into 4 Genera! Leontodon , Borkhau- 
sia , Scorzonera , Chondrilla ! and now must 
form a 5th, the name was an ancient of Hiera- 
cium of which it has the habit— -Type S. Caro- 
liniana Raf. Borkausia do Elliot, see his sy- 
nonymy and description, wherein he has proba- 
bly blended the next Genus also. My specimen 
