GV NORTH AMERICA, 03 
into 3 subgenera by habit, which may become 
G. when the strange floral structure will be as- 
certained in all. 
1. Asclepias, leaves opposite, milky plants. 
2. eptixis leaves verticillate, not milky. 
3. Stethorhiza, not milky, leaves scattered, 
type A. t aber osa with all its varieties, decum - 
bens , splendens , imbricata , obtusifolia , angus - 
tifolia , undulata , oppositifolia ! &c. Here 
the sexual apparatus is borne on a pentagonal 
pillar as in Stylandra or Podostima , but this 
structure belongs also to AscZ. curassavica and 
others. 
894. ONISTIS Raf. calix campanulate 5 den- 
tate equal, corolla campanul, subentire border 
pentagone. Stamens 5, filaments unequal thick 
short smooth inserted at base of corolla, an- 
thers equal linear 21ocular opening lengthways. 
Ovary round compressed, style long thick sub- 
clavate, stigma capitate. Fruit a capsule ? dis- 
coidal compressed bilocular disperme. Peren- 
nial ’, diffuse leaves alt . and oppos. flowers ax- 
illary solitary . — A singular N. G. found anony- 
mous among the Apocynes of Florida in Coll. 
Herb, but quite different except by habit, and a 
N. G. of Convolvulides, different from all those 
established in my fl. tellur. 1001 to 1050 by 
the calix and pistil, corolla akin but not plaited, 
stamens quite as in that family. I have not the 
ripe fruit. The name was a grecian one for 
some Apocynum. 
895, Onistxs longifolia Raf. creeping and 
quite smooth, stem branched diffuse, leaves ses- 
sile alterne and oppos. linear graminiform very 
long obtuse rugose ; flowers on axillary pedun- 
cles nodding— root white creeping terete now 
and then swelled up, stems diffuse or prostrate 
