FLORA NIGRITIANA. __ 261 
(so called) is inserted on the apex of the pedicel, but not imme- 
diately within the calyx, whose true nature is probably that of an 
involucre, as suggested by Brown. 
Olacinee, considering the smallness of the Order, rather 
abound in Western Tropical Africa, there being besides the 
above, four other species known belonging to other genera, 
viz.: Ximenia Americana, L., common to both the New and the 
Old World ; Groutia celtidifolia, Guill. et Perr., a Senegal plant 
closely allied to an Abyssinian congener ; Icacina Senegalensis, 
Juss, and another undescribed species of Icacina, gathered by 
Heudelot in Senegambia.—(G. B.) 
XXXII. ViNirER X. 
l. Cissus cesia, Afz. in DC. Prod. 1. p. 628; caule glaberrimo 
terete glauco, foliis petiolatis late cordatis obscure angulatis 
subacutis ciliato-denticulatis super glabratis subter puberulis 
reticulatim venosis, pedunculis gracilibus superne pedicellis- 
que elongatis puberulis paucifloris, floribus parvis, drupis late 
obovatis. — Guinea, Afzelius; Sierra Leone, Vogel, Don, 
(Country Grapes.) 
Rami crassitie penne olorine, pulchre glauci. Folia 5 unc. 
longa, super pube fulva sub lente subtilissime conspersa, 
luride viridi-fusca, subter pube tenui grisea ornata; petiolo 
puberulo, sub 2 unc. longo, Cirrhi validi, bi-multifidi. Pe- 
dunculus 9-pollicaris, di- trichotomms, gracilis, pedicellis } 
unc. longis, floribus triplo longioribus; alabastris breviter 
Cylindraceis, obtusis ; petalis 4, solutis. 
This differs from C. rufescens in the longer and more slender 
peduncles, in the fewer, smaller and less crowded flowers, and 
mM the glaucous stems. The nerves of the leaf are not rufescent 
im any of Vogel's specimens: those of Don's Herb. are between 
the Senegalese and Dr. Vogel’s in this character. 
2. Cissus argute, Hook. fil.; glaberrima, caule subgracili ob- 
Scure tetragono basi subpolygono, foliis sublonge petiolatis 
Ovatis acuminatis basi profunde cordatis argute serratis den- 
tibus erectis, stipulis late ovatis, cirrhis gracilibus, pedun- 
