k 
PENTANDRIA DI6YNIA. Asclepias. 
three inches high ; flowers large in proportion, green- 
ish yellow j fructification on a pedicel 
17. A. caulibus erectis, foliis petiolatis oblongis obtusis lae- 
vibus, umbellis paucis terminalibus, petalis erectis 
calyce multo longioribus, nectariis integris patulis bre- 
vibus. — IValt.Ji. car. 107. 
South Carolina. Walter. 1/. v. s. in Herb. Lyon. 
Flowers large ; petals green ; nectaries purple ; fruc- 
tification white. This and the preceding species de- 
viate from the general character of Asclepias , and pro- 
bably constitute a distinct genus ; but having had no 
opportunity to examine the living plant, I refer t em 
to this genus until another opportunity may be had 
to investigate them. 
18. A. caulibus erectis simplicibus glabris, foliis ovatis acu- 
minatis petiolatis : in medio cauli majoribus quaternis, 
umbellis duabus terminalibus laxifloris, pedicellis fili- 
formibus. — Jacq. obs. 2. t. 23. 
On lime-stone rocks : New York to Virginia. 1/ , May 
— July. v. v. From nine inches to a foot high y 
flowers small, sweet-scented; petals white ; nectaries 
rose-coloured. 
Foliis sparsis. 
19. A. caule erecto simplicissimo lineatim puberulo, foliis 
angustissime linearibus strictis glabris plerumque ver- 
ticillatis, corniculis exertis. Mich.fi. amer. l.p.llQ. 
Willd. sp.pl. 1. p. 1272. 
Icon. Plui. mant. t. 336. f. 4 . 
On dry hills and fields : New Jersey to Carolina. I/ . 
June, July, v.v. Petals yellowish-green ; nectaries 
white. 
20. A. caule decumbente foliisque sparsis praelongo-lineari- 
bus puberulis, appendicibus corollae corpusculo genita- 
lifero brevioribus et corniculo vacuis. Mich.fi. amer. 1. 
p. 110, 
A. incarnata. Walt.fi. car. 10(5. 
A. floridana. Lam. encycl. 1. p. 284. 
In shady wet woods : Carolina and Georgia. 1/ , July, 
Aug. v. s. Flowers pale purple ; fructification yel- 
low. 
21. A. caule erectiusculo summitate divaricato-ramoso hir- 
sutissimo, foliis sparsis oblongo lanceolatis hirsutis. 
183 
viridis, 
quadrifolia. 
verticillata. 
longifolia, 
tuberosa . 
