ASCLEPIADACEAE 1077 
Mid lobes usually 7—10 mm. long, narrowly ellip- 
buds short-ovoid. 
Narrower lobes of the crown truncate or emarginate, not 
arkedly longer than the broader lobes. 
2. O. carolinensis. 
Cro E m undulate- lobed, the crest double. 3. O. obliqua. 
Crown crenate-lobed, the crest if present, a narrow 
fold or ridge . O. Short. 
auc od or sellowii? crown-thin, the lower lobes 
Lower lobes only cleft to above the middle, the teeth of 
the slender e. far UE them 5. O. Baldwiniana, 
Lower lobes cleft well below the middle, 'surpassed by the 
roader bluntly toothed: lobes. 6. O. flavidula. 
Crown appearing 5-lobed, each lobe 4-toothed. T. O. floridana. 
decipiens Alexander. Leaf-blades ovate, 7-12 cm. long, the sinus aed 
1. O. 
row or closed: flower-buds ellipsoid- n or conic: cl -obes about 3 m 
long: corolla brown-purple; lobes 
linear, 10-15 mm. long: crown p 
id s 
ally adj. provi nces, sg C. to Okl , Mo., and 
hi 
Md.— The riability of th 
and the following species is most confusing, 
but the larger flowers and nar ide T 
lobes of this species easily separate it. 
2. O. carolinensis e: ) oe Er 
Raid ovate, 5-11 e open 
sed: flower Dude. m. ovoid: calyx- 
B. Bon 3 mm. long: corolla reddish or 
rarely pale; lobes eens elliptic, 7-10 mm. long: crown with the longer 
lobes usually 2- bu thed, the broader dc es entire, crested or ad ue ia within: 
follicles 9-11 em. long. [Cynanchum uid nense Jacq. dern carolinen- 
Sis R. Br. a. Mirsutus Miehx V. hirsutum Britton V. Jorida um. Vail. |— 
Woods and thickets, various provi nces, Fla. to Mis an nd Md. 
crown of this and the e preceding species is d variable, from fleshy 
thin, and with the crest of the shorter lobes, from a mer ridge to a oe like 
appendage, sometimes with a fringe- like appendage on ie outside as v 
3. O. obliqua (Jaeq.) Alexander. Leaf-blades broadly ovate to — 
ovate, 7-20 em. ae “the basal lobes mostly forming a closed sinus by the over- 
lapping rid Nec du, abo mni long: corolla dep da du P lobes 
lance-linea X UR erown with the longer lobes tru argi- 
ad folds cay eeds about 7 mm. long. [Gonolobus arte R. 
. lon 
neetoxicu m obliquum "Bu — Woods, thickets, and river-banks, in 
rich soil, various provinces, N of Coastal Plain, Tenn. to Ohio, Pa., and N. C 
4, O. li (A. Gray) e Leaf- ia broadly iu 2 em. long, 
the AE ph often forming a ruw sinus: calyx-lo Ea about 4 . long: 
corolla p purple; piis lance- linear, 111 mm. g: crown qs EE 
longer lobes or emarginate: follicles 8—10 c Ks ng: seeds about 
mm. 1l (em Shortii A. Gray occ Shortii Britton] one 
woods, Appalachian provinces, Ky. and Pa.—The flowers are said to 
have the scent of Calycanthus flowers. 
59. O. Baldwiniana (Sweet) Alexander. Leaf-blades pce ovate, 6-14 e 
long, deeply and Pli obliquely eordate at the base, the sinus open or the 
ds 2 of the s Jeaves overlapping: flo ERU long-conie: seers 
long: white or yellowish: lobes thin, erect or barely 
es mm. 
ay ea ding: oblong-linea i A crown very thin, with the longer 
$ l mm. long: 
lobes divided into two very Eum linear teeth fully double "the length of the 
