MR. G. BENTHAM ON GRAMINZE. 123 
pungent leaves, more numerous flowers in the spikelets, and some 
other minor points. 
95. Dacryrıs, Linn., is now limited to two species :—the com- 
mon and well-known D. glomerata, Linn., which from Europe and 
temperate Asia has spread over many parts of the civilized world ; 
and D. cespitosa, Forst. the celebrated Tussock grass of the 
Falkland Islands, which, though a much larger plant, appears to 
be strictly a congener. 
56. Lasrocuroa, Kunth, has three or four South-African 
species with a close almost spikelike panicle and hairy glumes, 
allied in many respects to Keleria; but the inflorescence as well 
as the many-nerved glumes bring them nearer to Dactylis. 
57. Brizopyrum, Link, as now understood, is specially founded 
on the Mediterranean Poa sicula, Jacq., to which are added three 
South-African species. The flat broad spikelets with coriaceous 
glumes are nearly those of Eragrostis sect. Platystachye ; but the 
flowering glumes have seven nerves, and the spikelets are nearly 
sessile in a bifarious spike, or especially the lower ones closely 
clustered. I have already referred under Distichlis to the Ame- 
rican dicecious plants for which the name Brizopyrum has been 
retained by Presl and by Fournier; the true Brizopyra are all 
hermaphrodite. 
58. SeLEROCHELOA, Beauv., is limited to the S. dura, a small 
Mediterranean annual well characterized by the inflorescence and 
shape of the glumes; the other species, sometimes referred to 
Sclerochloa, belong chiefly to Cutanda. 
59. Briza, Linn., about ten species, of which the typical ones 
are chiefly European, though one has now spread over the greater 
part of the civilized world ; two sections are entirely American, 
tropical or northern. All are characterized by the very concave, 
sometimes almost vesicular, glumes enclosing a much smaller broad 
flat palea, the grain much flattened from back to front, and some- 
times, but not generally, adhering to the palea. The three best 
known European species have a very loose panicle with the spikelets 
hanging from capillary branches; the Oriental B spicata, Sibth., 
differs in its narrow closer panicle. The American species have been 
separated as two distinct genera, which may be retained as sec- 
tions, though with little difference in essential characters. Chas- 
colytrum, Desv., has the awnless spikelets of the European species ; 
but the panicle, though branched, is much more compact, the 
