106 MR. G. BENTHAM ON GRAMINEX. 
16. LEPIDOPYRONTA, A. Rich., is a single Abyssinian species 
which 1 have not seen, and of which the specimen described is 
said to have been imperfect. From the figure and description it 
would appear to be allied to the Tripogon abyssinicus, Nees, but 
with broad, very villous flowering glumes, and the single awn not 
quite terminal. 
17. TETRAPOGON, Desf, has four Abyssinian, North-African, 
or West-Asiatie species, including the above-mentioned Chloris 
villosa, Pers., and C. macrantha of Jaubert and Spach. They have 
one, two, or rarely three terminal erect spikes, resembling Elio- 
nurus in the long silky hairs which cover them, but with the cha- 
racters of Chlorides, differing from Chloris itself in their several- 
flowered spikelets. 
18. AsTREBLA, F. Muell, comprises two or three Australian 
species formerly referred to Danthonia, from which the habit and 
untwisted awn separate them. In the ‘Flora Australiensis’ I 
placed them near Pappophores on account of their many-nerved 
glumes; but the inflorescence places them in Chloride, where 
they come in many respects near to Zetrapogon. 
19. WANGENHETMTA, Moench (Cynosurus Lima, Linn.), from 
Spain and North Africa; 20. Crrenoprsıs, DeNotar. (Festuca 
pectinella, Delile), from North Africa; and 21. TErnACHNE, 
Nees, from South Africa, are all single species hitherto referred 
to Festuce&; but they have all the one-sided spikes with the 
spikelets sessile in two rows of Chlorides, to which, following out 
Munro's memoranda, I have transferred them. The spikes are 
solitary, erect, and often slightly faleate in Wangenheimia and 
Ctenopsis, several scattered along the common peduncle in 
Tetrachne. 
22. DINEBRA, Jacq. remains limited to the original African 
and East-Indian D. arabica figured by Jacquin. DeCandolle, as 
above mentioned, joined it with the section Atheropogon of 
Bouteloua, of which it has the habit; but there are always two 
fertile flowers to the spikelet. Kunth referred it to Leptochloa, 
from which it is further removed by its short dense'awned spikes ; 
and from both it is separated by the lower empty glumes as long 
as, or longer than, the rest of the spikelet. 
23. ELEUSINE, Gertn., taken in the sense given to it by Per- 
soon, isa natural genus of about seven species, from the tropical 
and subtropical regions of the Old World, two of them common 
weeds also in America. The spikes are usually several, digitate 
