454 FLORA NIGRITIANA. 
ovali-oblongis acuminatis sinu lato cordatis auriculis rotun- 
datis subtus glaucis supra ad petiolum glanduliferis, pedun- 
eulis folio multo brevioribus multifloris, floribus subumbel- 
latis, corona staminea ore 10-loba, lobis antheris oppositis 
crasso-clavatis integris, alternis dimidio minoribus, stigmate 
breviter apiculato subintegro.— Sierra Leone, Don. : 
Folia 1}-2}-pollicaria, a petiolo palmatim 5-nervia, acumme 
longiusculo acuto. Pedunculi semipollicares ; inflorescentie 
axis paullulum elongata in racemum brevissimum umbellæ- 
formem. Pedicelli 1} lin. longi. Flores vix linea longiores. 
Masse pollinis parvæ, apice attenuato affixe, pendulæ quidem 
sed valde divaricate et fere horizontales. 
The Calotropis procera, Br., common over a great part of 
Africa and E. India, is also found in Senegal. Pentatropis $p'- 
ralis, Dene., extends from Senegal to Nubia. 
1. Sarcostemma, sp.—Sierra Leone, Don ; Cape Coast, Vogel. 
A leafless climber, which from the single flower preserved I 
am unable to distinguish from the E. Indian S. brevistigma, of 
which it appears to have the corona and stigmata, but with 
rather a larger corolla. 
Two species of Ozystelma are from W. Africa, and have been 
named O. Senegalense and O. Bornuense by Decaisne, after 
their native countries. 
1. Demia Angolensis, Dene. in DC. Prod. 8. p. 544.—Common 
from Senegal to Angola, Vogel, Ansell, Don, and others. 
There are two varieties of this plant: one, the Ascl. con- 
volvulacea, Schum. et Thonn., having the corolla of a deep pur 
ple at the base with greenish-white divisions, is the more northern 
form found in Senegambia and Guinea, as far as Accra; the 
other, with large leaves and a pure white corolla, extends from 
Cape Coast, southwards. This is the Ascl. scandens figured by 
Palisot de Beauvois, and the A. muricata (not echinata, as mis- 
quoted in the Prodromus) of Schumacher and Thonning. The 
Senegambian collection contains also a third form, probably 4 
distinet species, with a longer tube to the corolla. 
The four W. Tropical African species of Gomphocarpus, 8° 
