CENT. II. 17 
oblongis planis acutis sepe dimidiatis—G. estab- 
lished 1834, dedicated to Dr Short. 
SuonTiA dentata Raf. Arabis do Nut. Draba 
do Hooker, Sisymbr. do Tor. et Arabis'—Ken- 
tucky, Missouri. 
121, SEMETUM Raf. diff. Lepidium, stig- 
ma sessile bilob. silic. ovatobl. nervosa ad dis- 
sep. contrario angusta, valvis compressis carina 
obtusa, loculis 1-2 sp.—all my specimens ate in 
fruit, thus flowers unknown, akin to Dtleptiven 
if stamens 2, but silicle not emarginate. Sem- 
et was an oldname of Lepidium. 
SEMETUM ramosum Raf. ramosa subdicliot. 
fol. lin. cuneatis acutis glaucis integris, racemis 
ramosis, pedic. comosis filif. elongatis proximis 
—fFlorida. erect smooth, leaves uncial, flowers 
and silicles very small but profuse. t 
122, Discovium ohiense Raf. N. G. 1819. 
Dec. &c.—Ohio. 'This G. although shown to 
Torrey in 1826, has not been admitted by him, 
and merely noticed as doubtful. It is near the 
last G. but the silicle is shorter not nervose, 
stigma entire, petals yellow. + 
123, Potypremum squarrosum Raf. P. pro- 
cumbens L. O-— perennis, caulib. erectis vel 
procumb. bisulcatis scabris fol. linearib. mar- 
gine scabris, internodis longior, florib. sepe term. 
congestis, bracteis squarosis quaternis—Carol. 
Florida. I have revised this sp. to contrast ít 
with the next. 'This curiuos G. does not belong 
to Scrofularides; but is very near Veronica, 
differing by habit like Scleranthus, corolla equal 
and 4 stamens, are they opposited ? when it 
would be of family Primulides. 
124, Polypr. laxum Raf. annuum, decum- 
bens, caulib. laxis glabris bisulcatis, fol. lin. lan- 
ceol. margine glabris, internodis brevior, fl. so- 
