FLORA NIGRITIANA. 453 
There is also, in Vogel’s collection, a specimen in fruit of 
some plant of the tribe of Echitee, which agrees in foliage and 
in the glands of the petiole with Strophanthus sarmentosus, 
but the inflorescence appears to be different. 
LXXIII. AscLEPIADEX. 
There are no specimens in the collection belonging to the 
first tribe, Periplocee ; but two species have been described from 
Angola, the Zucchellia Angolensis, Dene., and ZEchmolepis 
myrtifolia, Dene. 
1, Secamone myrtifolia, Benth. ; volubilis, glabra, foliis ovatis 
acutiusculis v. subacuminatis basi rotundatis cuneatisve 
utrinque glabris novellis vix punctatis, cymis ferrugineo-pu- 
berulis in paniculas axillares folio longiores dispositis, corolla 
glabra, corone stamineze foliolis gynostegii dimidium zequan- 
tibus compressis faleinulatis apice incurvo-hamatis, stigmate 
brevi obtuso.— Cape Coast, Vogel. 
Affinis S. multiflore, sed inflorescentia diversa. Folia breviter 
petiolata, 14-24 poll. longa, 14 poll. lata, subcoriacea, costa 
media subtus prominente, venis obscuris, sub lente minu- 
tissime punctulata. Cyme pedunculate, secus pedunculum 
communem opposite, una terminali, v. in axillis supremis 
Solitarie et breviter pedunculate. Flores magnitudine 
torum S. Thunbergii, extus rubri, intus flavi. 
`~ The Ichnocarpus Afzelü, Rom. et Schult., from Sierra 
Leone and Guinea, is probably an Asclepiadeous plant, and 
Possibly a Secamone, judging from the words quoted from 
Afzelius that the internal parts of the minute flowers ^ formant 
columnam petalis dimidio breviorem, teretem, superne cras- 
Siorem, apice rotundatam et inferne cinctam, ut apparet, filis 
brevioribus subulatis gracillimis erectis." 
There are two W, African species of Xysmalobium ; X. Heu- 
delotianum, Dene., from Senegambia, and X. sessile, Dene., 
from Angola. R 
1. Cynoctonum acuminatum, Benth. ; volubile, glabrum, foliis 
