236 LXXXV. .ASCLEPIADEZ (BROWN). 
never connate into 1 tube, sometimes having 
5 minute teeth (which are often concealed 
under the anther-wings,) alternating with 
them at their base. 
Coronal-lobes opposite to the corolla-lobes and 
connivent in a cup. ; : : . 29. PROSOPOSTELMA 
(and Cynanchum 
schistoglossum). 
Coronal-lobes alternating with the corolla- 
lobes and opposite to the anthers, free to 
their base or partly or entirely adnate to 
the staminal-column. 
Stem twining. 
Corolla saucer-shaped, not lobed to more 
than half-way down; coronal lobes 
erect, lanceolate-attenuate, gibbous 
at the base . : . . 25, OXYSTELMA. 
Corolla not saucer-shaped, lobed to much 
more than half-way down. 
Coronal-lobes dorsally flattened, usually 
thin, with or without keels, 
thickenings or appendages on their 
inner face. - 30; 
Coronal-lobes laterally Mittens, ad- 
nite to the backs of the anthers, 
with free tips. : : . 24, 
Coronal-lobes obconic, trumpet- or 
slipper-shaped, truncate or rounded 
at the apex, with a short inflexed 
horn on the inner side i aoe 
Stem not twining. 
Flowers in racemes, small corymbs, or 
densely spirally arranged around 
the terminal part of the peduncle, 
which elongates as the flowers 
successively deve'op. 
Coranal-lobes dorsally flattened, thin . 30. 
Coronal-lobes not dorsally flattened, 
thick and fleshy, beaked or bifid 
at the apex ; c ele: 
Flowers strictly umbellate, ‘all arising 
from the same point. 
Coronal-lobes lat: rally flattened, with 
an upcurved spur at the ba-e. . 16. 
Coronal-lobes not spurred at the base. 
Coron 11-lobes usually long, spreading 
at the base then incurved over 
the staminal-column, often 
dilated at the apical part, flat, 
with or without a pair of con- 
tiguous erect flat lobes or keels 
on the basal part, sometimes 
reduced to the basal part with 
its contiguous lobes, without 
the t:rminil part, but then 
CYNANCHUM 
PENTATROPIS. 
PENTARHINUM. 
CYNANCHUM. 
KaNAHIA. 
CALOTROPIS. 
