Cynanchum. | LXXXV. ASCLEPIADEZ (BROWN). 
ing difference also occurs in Asclepias, so that it appears 
specific importance only. 
Plant with stems and branches several inches or feet in 
length, twining or straight. 
Stems with well dezeloped leaves. 
Leaves linear. : A 
Leaves obtusely hastate at the base. 
Corona 2 lin. long; style shorter than the 
corona . = 
Corona 1 lin. long; ‘style Jonger than the ¢ corona 
Leaves cordate, subtruncate or rounded at the 
base 
Stems twining, slender, 3-13 lin. thick. 
Corolla-lobes 2—4 lin. long. 
Corona with 5 subulate teeth within the 
ik, 
tube in front of its 5 longer teeth . 1. 
Corona with 5 slightly hooded lobes within 
the tube, folded in the bases of the 
longer teeth 
Corona with 5 long and 5 short ‘teeth at the 
top, without teeth or lobes within its 
tube. 
Petioles 1-2 in. long ; 
erect or recurved . 
Petioles 3-83 in. long; 
strongly inarched . 
Corolla-lobes 4-2 lin. long. 
Anther-appendages long and narrow, con- 
nivent-erect over the conical or terete 
apical part of the style. 
Peduncles 3-1} in. long 5 
Peduncles 04 in. long. 
Corona tubular, distinctly 10-toothed 
coronal-teeth 
coronal-teeth 
at the apex 6 
Corona tubular, 5-lobed or " toothed at 
the apex . 9 
Anther-appendages suborbicular or . sub- 
quadrate, inflexed over the truncate or 
dome-shaped apex of the style. 
Corolla-lobes 1 lin. long ; corona Bs lin. 
long. 7 
Corolla-lobes 4- 3 a tong corona 
3-% lin. long 8 
Stems not twining, 2-3 lin. thick in the ‘lower 
art. 
Coraie tubular, 10-toothed, with the alternate 
teeth entire or bifid : . ‘ 
Corona of 5 cuneate trifid lobes 
Stems fleshy, leafless, or with very minute rudimen- 
tary leaves. ; r 3 : = yobo- 
Plant 1-2 in. high, erect, leafless at the time of flow. r- 1 
We. | . 14. 
eoiai 
a 
391 
to be a character of 
C. defoliascens. 
. C. hastifolium. 
C. clavidens. 
C. abyssinicum, 
. C. mossambicense. 
. C. polyanthum. 
. C. longipes. 
. C. Mannit. 
. C. Adaline. 
. C. altiscandens. — 
4 
. C. fraternum. 
. C. schistoglossum. 
C. validum. 
C. somaliense. 
C. surcostemma- 
toides. 
C. precor. 
