petiole as long as the leaf itself. Umdbels sessile, few- 
flowered between the petioles, and shorter than they are. 
Calyx 5-cleft, downy, with ovate, blunt, spreading seg- 
ments. Corolla rotate, 5-parted, downy, green at the 
back and edge, purple in the middle; with ovate, blunt 
segments. Crown cup-shaped, green, with 15 teeth, of 
which the 5 opposite the recesses of the corolla are the 
largest, inflected, and ciliated. The Podlen-masses are twin, 
and attached by their middle. Ovaries two. Style single, 
exserted, filiform. Stigma obscurely 2-lobed. 
The most recent enumeration of this genus compre- 
hends 25 species, all of which are American, and 19 of 
them intratropical. F 
malls 
