228 DE. J. D. HOOKER ON THE PLANTS 
fectus) membranaceus ; hermaphroditus 2-paleaceus, valvulis oblongis 
obtusis cymbiformibus coriaceis laevibus. 
The refracted leaves and costate subacute glumes at once dis- 
tinguish this remarkable species. 
6. PENNISETUM (GvwNoTHRIX) RIPARIOIDES, Hochst.?; A. Rich. 
Fl. Abyss. ii. 383. 
Hab. Cameroons Mountains, alt. 7000-8000 feet. (Fl. Dec., Jan.) 
The rachis and apex of the culm are more villous than in the 
Abyssinian specimen, but the plants are otherwise very similar; 
the whole genus, however, requires revision before the limits of 
this or any other species can be established. The spikelets are 
sometimes very lax and few, at others dense; the sete are about 
as long as the glumes, and vary greatly in number. 
7. VILFA MONTANA, H. f.,n.sp. Glaberrima, levis, spithamea ad pe- 
dalis, culmis czspitosis simplicibus gracilibus erectis, foliis radicalibus 
curvis elongato-subulatis marginibus involutis scabrulis, panicula 
laxa ovata, ramis paucis verticillatis capillaribus apices versus 2-3- 
floris, spiculis glaberrimis nitidis, gluma inferiore superiore lanceolato 
acuminato + breviore, flosculo gluma superiore breviore. 
Hab. Cameroons Mountains, alt. 7000-9000 feet. (Fl. Dec.) 
Gramen elegans, perenne. Folia radicalia 11-2 unc. longa, vix 4j unc. 
lata, rigidula, patenti-recurva, e vagina brevissima sensim subulato- 
attenuata, sulcata. Culmus gracillimus, 1—2-foliatus, vaginis elongatis 
tenuibus suleatis, ligula 0. — Panicula 2 unc. longa, verticillis ad 6, 
rhachi ramisque capillaribus, infimis deflexis. Spicule } unc. longe, 
fuscee, nitide. Gluma inferior obtusiuscula, superior acuta. 
A. beautiful small grass, almost identical in the inflorescence, 
and size, structure, and colour of the spikelets, with the S.-African 
V. centrifuga, Nees; but the branchlets are only in threes, the 
leaves infinitely narrower, and the whole plant very slender: the 
two grasses are, however, most closely allied. 
8. DevEvx1A Manni, H.f.,n. sp. Culmis elongatis gracillimis foliosis 
2-3-pedalibus, vaginis suleatis scabrulis, foliis strictis anguste lineari- 
lanceolatis, ligulis elongatis fissis, panicula elongata effusa multiflora 
rhamis rachique capillaribus, glumis lanceolato-subulatis glabris ener- 
viis carina scabrida, palea inferiore villosa apice breviter 4-setosa 
arista basilari palea subduplo longiore, superiore sequilonga apice 
2-setosa basi villosa et setula villosa aucta. 
Hab. Fernando Po, alt. 8500 feet. Cameroons Mountains, alt. 8000- 
13,000 feet. (Fl. Dec.-May.) 
Gramen gracile, culmis fastigiatis, parce ramosis. Folia 6 unc. longa, 
