MR. G. BENTHAM ON GRAMINE®. 101 
Kol.) a small but mixed genus, of which the typical species is 
a common weed in most warm or temperate parts of the civilized 
world. It has the slender spikes and small spikelets of Jf¿erochloa ; 
but the spikes are several digitate at the end of the panicle, and 
the rhachilla is produced beyond it into a small point or bristle. 
Three Australian species have, however, been added to it with the 
spikelets of Microchloa but with the inflorescence of Cynodon, 
thus closely connecting the two genera. Persoon’s generic name 
is far from being the oldest, but has been so long and so uni- 
versally adopted, that the substitution of either of the others 
for it would only breed confusion without the slightest advantage. 
4. HARPECHLOA, Kunth, has also two South-African species. 
The spike is single, terminal, dense, and unilateral, often falcate ; 
and there are usually one or two male flowers above the fertile 
one, tne glumes all unawned. 
Of 5. CrEN1UM, Panz. (Monocera, Ell), we have seven species, 
of which four from North or South America, three from Africa 
or the Mascarene islands. The spikes are solitary or rarely two 
or even three at the end of the peduncle; the spikelets, though 
elegantly pectinate as in Harpechloa, have a very different struc- 
ture: the second empty glume is larger than the others, and bears 
on the back a fine horizontal point sometimes reduced to a small 
tubercle; the third and fourth glumes are small and empty, or 
only enclose a palea; the fifth or flowering glume ends in a fine 
awn, and above it are one or two empty ones. 
6. ENTEROPOGON, Nees, was founded on an East-Indian grass 
with a single long, often incurved terminal spike ; otherwise very 
near Chloris except in some minor points. It now includes 
Ctenium Seychellarum, Baker, from the Mauritius, which is scarcely 
specifically distinct from the common East-Indian one, Z. macro- 
stachya, Munro (Chloris macrostachya, Hochst.), from Abyssinia, 
and an unpublished species from Mayotte in Madagascar, Boivin 
n. 8019, which may be thus characterized :—E. leptophylla, Benth., 
foliis angustissimis siccitate convoluto-subulatis, glume florentis 
integre arista gluma ipsa longiore. The habit and the long 
unilateral spike are precisely those of the common Indian Z. me- 
licoides ; but the leaves are very much narrower and scarcely 
flattened in the iower part, the spikelets rather larger, the flower- 
ing glume nearly 3 lines long, and the awn about š inch, and, 
at least in the spikelets examined, the flowering glume is quite 
entire, scarcely free at the point from the awn. 
