OF THE SIERRA LEONE BOUNDARY COMMISSION. 91 
I am not able to refer this species to one of the described 
genera, and yet hesitate to found a new genus upon it in the 
absence of fruits. As far as the floral structure is concerned it 
seems to belong to the group of Plumeria, whilst the general 
habit is quite that of Olitandra. 
ASCLEPIADACES. 
TACAZZEA APICULATA, Oliver, var. nov. BENEDICTA, S. Ell. 
Caules juniores albo-velutini ; venis 9-jugis; foliis 7-12 cm. 
long. et 3-6 cm. lat. ; petiolis 2-4 cm.; coron# squamis filiformi- 
bus 12 mm.; corolla lobis 6 mm. 
This form differs so little from the specimens brought by the 
Speke and Grant Expedition and Schweinfurth from the head of 
the Nile that it can scarcely be taken as other than a Niger 
variety. 
“Wakwangé.’’ The powdered leaves when rubbed on the 
skin immediately remove the itching of crawcraw ; by Dantilia 
River between Niger and Falaba, March 23, no. 5269. 
RaPHIONACME BRowniil, sp. nov. 
Herba radice tuberoso lignoso 4 cm. diam.; caulibus 25- 
35 cm. striatis lignosis obscure asperatis ; foliis sparsis anguste 
linearibus planis 2-3 cm. long. et 1-2 mm. lat. 
Inflorescentia tota calycibusque densiuscule lepidis ‘albis mi- 
nutis conspersis; pedicellis 1-2 cm.; bracteis acutis 3 mm. ; 
calycis campanulati lobis ovatis acutis dorso puberulis 2 mm. ; 
corolle tubo 4 mm. glabro, lobis oblongis densius externe lepi- 
dotis 3 mm.; corone squamis ad corolle tubum affixis quam lobi 
paullo longioribus et lsdem alternis filiformibus hirsutis ; fila- 
mentis basi in membranam orbicularem expansis supra squamas 
ad corollam affixis; antheris apiculatis; folliculis 15 cm. longis, 
4 mm. latis. 
Flowers pink, growing on dry schistose or gneissose rocks, 
alt. c. 3500 ft., Falaba, March 15, no. 5179. 
I have great pleasure in naming this after Mr. N. E. Brown, 
whose careful study of the order has been of the greatest service 
to me. 
PERIPLOOA NIGRESCENS, Afzel. _ 
Samu Country, Dec. 26, no. 4206; Kurusu and Kahreni, Limba, 
April, no. 56381. 
