44 Mr. Woops on the Genera of European Grasses. 
by many botanists. It differs from both in its one-sided head of flowers, and 
I readily follow Link in making of it a distinct genus under the name of 
Oreochloa. Sclerochloa dura has nothing in common with Sesleria either in 
character or habit, nor can I understand what induced Linnæus to join it 
with Cynosurus. Its nearest affinity is that pointed out by Palisot de Beau- 
vois with Sclerochloa procumbens, but this can by no means be separated 
from S. maritima and the other Glyceriæ of Smith. Sczerocuzoa thus formed 
is, I think, a natural genus, though it must be confessed that S. dura is very 
different from the more delicate species, and especially from the Festuca ex- 
pansa of Kunth, which yet seems better placed in this than in any other 
admitted genus; bat the dichotomous inflorescence, thickened flower-stalks, 
and connate glumes, might, if it had com panions, make it the type of a sepa- 
rate one; Trinius accordingly has named it Sphenopus. 
The purple stain noticed in Poa bet 
very distinct from Triticum. Poa litto- 
to Sclerochloa; but the acute form and 
; ex x Se 
| tare 1S equal throughout, while 
erminates IN à SCariose extrei 
nity, 
