È 
FLORA NIGRITIANA. 563 
Oplismenus Burmanni, Beauv.—Kunth, Enum. 1. p. 189. 
—Fernando Po, Vogel; Sierra Leone, Don; Tropical Ame- 
rica, Africa, and Asia. (Wall. Catal. n. 8677 et 8678). 
| 2. Oplismenus Africanus, Beauv.—Kunth, Enum. 1. p. 160.— 
— 
— 
St. Thomas, Don; Fernando Po, Vogel; South Africa. 
» Gymnothrix hordeoides, Kunth, Enum. 1. p. 160.—Grand 
Bassa and Fernando Po, Vogel; Sierra Leone. 
- Pennisetum macrostachyum, Benth. ; elatum, foliis scaberri- 
mis, eulmo vaginisque glabris pilosisve, spica elongata, rhachi 
villosissima, spiculis 2-4-nis, involucri setis exterioribus nu- 
merosis flores breviter superantibus, interiore unica longa 
basi plumosa, gluma inferiore minuta, superiore floribus 
multo breviore, flore neutro unipaleaceo, palea hyalina 5-nervi, 
stylis basi connatis.—Abdh and Fernando Po, Vogel. 
Culmus subramosus, basi decumbens et radicans, dein erectus, 
[U 
6-8-pedalis et altior. Vagine striate, leves v. hinc scabrius- 
cule. Folia 2-3-pedalia, pollicem lata, utrinque pilis brevi- 
bus sparsis scaberrima, ad margines serrulato-spinulosa, ad 
oras vaginarum barbata; geniculi barbati v. lanati. Spica 
subsessilis, ultrapedalis, densiflora, albida v. flavescens ; rhachis 
pilis mollibus albis dense villosa. Flores subreflexi. Seta 
interior cujusve involucri 9-10 lin. longa, basi plumosa, 
cæteræ numeros scabride fere dimidio breviores. Glume 
et palez tenues, fere hyaline ; floris hermaphroditi apice sca- 
briusculze, 
This must be very near to, and possibly a mere variety 
b P. purpureum, Schum. et Thonn., a Guinea plant, but it has 
no tendency to assume a purple colour, I have never seen more 
than a. single plumose seta in each involucre, and the inner 
glume is considerably shorter than the neutral flower. — 
?. Pennisetum polystachyum, Schult. Mant. 2. p. 456.—P. 
holcoides et P. barbatum, Kunth, Enum. l. p. 163.— Cape 
Coast and Acera, Don, Vogel; Arabia and East India. 
These specimens are precisely similar to those of Roxburgh 
from East India. The leaves are smooth or hairy, the nodi 
Senerally without hairs, the spicule always solitary in each 
involucre, the outer glume generally wanting, but sometimes 
002 
