32 
NEOBOT. 
folioles lanceolate, upper leaf sessile trifoliate, 
lanceolate serrulate, involucres lanceolate re- 
flexed. — Found from New Jersey to Illinois, in 
waters, rare, pedal and bipedal, folioles about 3 
inches long, all serrulate sessile except the odd 
one ; umbel with about a dozen of umbellules, 
6 to 8 small folioles for involucres, the partial 
still fewer and smaller less reflexed, flowers 
white as in the Genus, quite distinct from S. 
latifolia and akin species. 
808. PHAIOSPERMA Raf. herb. 1833 
page 77. Polygamous, InvoL one, partial few. 
Calix 5dentate, petals obcordate involute, styles 
elongate, stigmas capitate. Fruit smooth fun- 
gose ovate convex with a thick integument, no 
ribs nor angles nor wings nor thicker edge. 
Leaves sometimes opposite , polytome , flowers 
white small , seeds hr own. — This G. which was 
pronounced new by Torrey and a Polytenia by 
Nuttal, differs from it, as will be seen below, and 
chiefly by the involucre and the seeds convex 
and not concave outside. The name alludes 
to the brown seeds. I have corrected the char- 
acters by withdrawing from it Ph , verticillata , 
but uniting a new species. 
809. Phaiosperma trifib a Raf. herb, stem 
dichotome subcostate, leaves alterne and sub- 
opposite cuneate triparted, segments oblong 
subequal tridentate ; involucre unique, partial 
2-41inear — discovered in 1823 in the Western 
glades of Kentucky, pedal, vernal, leaves short, 
flowers small, seeds of a bay brown. 
810. Phaiosperma pulverulent a Raf. glau- 
cous pulverulent, stem dichotome striate, leaves 
alternate triparted segments oblong pinnatifid ; 
involucre often lacking, partial 5-8 linear color- 
ed — In Florida, found by Kin or Baldwin, 
