ASCLEPIADACEAE 1065 
Twining vines. 
fee slightly united at the base: column not elon- 
Crown-lobes each with an entire or cleft terminal 
appendage. 12. GONOLOBUS. 
Crown-lobes entire or lobed. 
Corol pad glabrous within:  crown-lobes 
Stigma flat: crown-lobes not notched. 13. AMPHISTELMA. 
tigma conic: crown-lobes notched at the 
IA 
4. LYONIA. 
Corolla-lobes pubescent within: crown-lobes 
arrow . METASTELMA. 
Petals ünited to about the middle: column elongate. 16. EPICION. 
m 
III. V XICEAE 
Crown disk-like or saucer-shaped, obseurely, if at all ridged. 
M rers ee column distinet, appendaged at the 
ridged. 17. CYCLODON. 
CORONA "MGE reticulate: column nearly obsolete, neither 
appendaged nor ridged. 18. VINCETOXICUM. 
Crown cup-shaped or incurved at the tip, usually crested or 
appendaged on the inner side. | 
Cymes long-peduncled, many-flowered: leaves large. 19. ODONTOSTEPHANA. 
Cymes sessile, 1-5-flowered: leaves small. 20. IZDISONIA. 
PERIPLOCA L. Slender twining, partly woody, vines. Leaf-blades 
breed. membranous.  Cymes broad.  Calyx-lobes spreading. Corolla rotate, 
inconspicuous, lobes pubescent within 
with lobed seales, each n 
corolla. <A 
nected at the apex, ao 
out 
P. graeca L. Sp a bes eae 
elliptic to ovate, 6-10 em. long, acumin 
Calyx-lobes ovate to deltoid: oe ee 
broadly linear, 9-11 mm. long, brownish- 
purp d S within: crown- 
appendages nearly as long as the corolla- 
aa follieles sud: seed fusiform , 9-1 
g.—(SILK-VINE.)—W fenee-rows, nd eult. EUM various 
on 
D inm Fla. to Okla., Kans., Pen Mass. Nat. of Eu.—Sum 
2. CRYPTOSTEGIA R. Br. Stout woody sprawling vines. Leaf-blades 
broad, coriaceous. Cymes narrow. Calyx- -lobes erect. Corolla funnelform, 
corolla. Anthers connate around the stigma, 
glabrous. Follicles stout.——Two species, in 
the Old World tropics. | 
grandiflora R. Br. Stem ies leaf- 
blades ‘oval, elliptic, or ovate, 5-10 c m. long, 
blunt calyx- lobes lanceolate to ovate, acumi- 
nate: C. lobes broad, often ovate, 2-3 
shor 
straight, 10-15 em. long: seeds bottle-shaped, 
