NORTH AMERICAN 
9 
737. DIDIPLIS Raf. 1833. Calix persistent 
campanulate 4fid, segments unequal acute. Co- 
rolla none. Stamens 2, filaments exerted, an- 
thers rounded, stigmas 2 subsessile. Capsule 
globular bilocular poly sperm. Leaves oppo- 
site , Jtoivers axillary sessile.— A very distinct 
Genus blended with Peplis by Nuttal and De- 
candole, which has a calix 12fid and 6 stamens! 
the Peplis indiea with spicate flowers, calix 8 
dent. 4 stamens &, c, is also a peculiar Genus 
Nexilis Raf. meaning not with 6, while Didi- 
plis means two doubling . 
738. Didiplis linearis Raf. atl. J. and flo- 
rula tex. 16 — Peplis diandra Nuttal in Dec. 
prodr. — Stem terete ramose, leaves sessile prox- 
imate decussate patent linear obtuse uninerve, 
flowers sessile solitary axillary. — An aquatic 
plant of Red River, Texas and Arkanzas, habit 
of Callitriche, leaves narrow elongate uncial, 
flowers small green. In Collins Herb, it was 
marked a N. G. near Lythrum. 
739. Diphyleia cymosa Mx. This fine plant 
seen by few, is so rare that its existence was 
doubted by some of our skeptics, notwithstand- 
ing the two fine figures of Michaux. It is a 
vernal plant of the Unaka and Cheroki Mts, 
where few botanists have dwelt or travelled. 
My specimen in Col. Herb, was collected by 
Lyons, and is in fruit, the angular stem has only 
one leaf 6 inches broad, very angular but hardly 
dentate, the cyme is trifid and ramose, berries 
subovate obliqual. If it is a deviation it may 
be called var . trifida . 
740. D1SCOPLIS Raf. Dioical, male fl . . , 
female fl. calix persistent oval hirsute 4dentate, 
ovary sessile sub4gone warty, stigma sessile 
large sulcate. Fruit inclosed in calix, indehis- 
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