110 ME. G. BENTHAM ON GBAMINEE. 
4. BolssrEra, Hochst., is a single Oriental species, which, 
besides the characters derived from the glumes, has a very short 
membranous dilated two-lobed style, different from that of every 
other known grass. 
5. Scumipria, Steud., contains two species closely resembling 
each other, öne from the Cape-Verd Islands, the other from 
tropical and South Africa, with a narrow but loose panicle, and 
the flowering glumes ending in four inner lanceolate lobes, and 
five outer subulate lobes or awns. 
Our second subtribe, Zriodiee, is not so definite as could be 
wished. There are usually more than two flowers to the spike- 
let; and the flowering glumes have rarely more than three nerves, 
and end in three teeth, lobes, or awns. These characters are gene- 
, rally very prominent; but in a few species of Z'riodia and Dipl- 
achne the teeth are scarcely more than what occur occasionally 
in some other subtribes, and in one or two species of Triraphis 
the nerves of the glumes are more numerous, bringing them 
technically near to Pappophore. The panicle in all the genera 
is usually narrow, dense or loose, but very rarely spike-like, and 
in à few species loose and spreading. We include six genera. 
6. Trropra, Br. (Uralepis, Nutt.), as at present limited, com- 
prises about twenty extratropical species, northern or southern, 
with a very few extending into the tropics in America or Africa. 
It has the typical characters of the tribe without the peculiarities 
of the other genera, the lobes of the flowering glumes reduced to 
short teeth or points, or the central one rarely lengthened into a 
short awn. It must be admitted, however, that it is still both a 
vague and a polymorphous genus, comprising three rather dis- 
tinct sections and a few anomalous isolated species :—1. Jsofria, 
three Australian species (I. Mitchelli, Benth., T. pungens, Br., 
and I. Cunninghamii, Benth.) with the three lobes of the flower- 
ing glumes narrow lanceolate and equal; 2. Uralepis (Sieglingia, 
Bernh., Merisachne, Trin.), about sixteen American or Australian 
species with one European one, in which the lateral teeth of the 
glumes are broad and not pointed and sometimes very minute, 
the middle one a point or very short awn; 3. Tricuspis, Beauv. 
(Windsoria, Nutt.), three North-American species differing from 
Uralepis in the nerves of the lateral teeth produced into short 
points. Besides these, Leptocarydion, Hochst., is an Abyssinian 
species, 7. plumosa (Leptochloa plumosa, Anders., Diplachne alo- 
pecuroides, Hochst.) with the dense soft panicle almost of Tri- 
