112 MR. G. BENTHAM ON GRAMINEE. 
Fournier also was not aware of the Chilian species previously 
published by Philippi, whose generic name necessarily takes the 
precedence over Fournier's. 
10. EREMOCHLOA, S. Wats. contains two New-Mexican or 
Californian species, well described and illustrated by S. Watson. 
The genus is exceptional in the subtribe in its one-flowered 
spikelets, and in the two empty three-awned glumes between 
the lower pair and the flowering one. 
11. Trrraputs, Br. comprises five or six species, one as yet 
unpublished from South Africa, the others from Australia. In 
all, the three lobes of the flowering glumes are awned, whilst in 
one species, 7. mollis, Br., otherwise inseparable from the genus, 
there are additional small membranous lobes between the awns, 
and at least five nerves to the glume, showing a close connection 
with the Pappophorem. T. microdon, Benth., from Australia, is 
a very anomalous plant with unawned glumes, which should be 
removed from the genus ; but it is difficult to say where it should be 
placed T. capensis, Nees, is a Danthonia (D. radicans, Steud.). 
The third subtribe, Arundinee, though often regarded as a 
substantive tribe, has no definite character beyond the tall habit 
with a rich panicle, as designated by the common name Reed, 
and the long hairs surrounding the flowering glumes, either 
arising from the rhachilla or from the glumes themselves. This 
character, however, is no more exclusive here than in Sacchare& ; 
for there are other genera, such as Calamagrostis, Graphephorum, 
&c., which have the hairs nearly as long, but which on other 
accounts cannot be included in Arundinez. The genera certainly 
belonging to the subtribe are four:—12. Gyxrnruw, Humb. 
and Bonpl., three tropical or subtropical American species with 
strictly dicecious spikelets. 13. AMPELODESMOS, Beauv., two 
Mediterranean species with rigid five-nerved flowering glumes. 
14. Arunvo, Linn. (Donaz, Beauv., Scolochloa, Mert. and Koch, 
Amphidonax, Nees), three or four species from the warmer 
regions of the New and the Old World, very abundant all round 
the Mediterranean, with three-nerved flowering glumes ; and 15. 
PunaGurrEs, Trin. (Arundo, Beauv., Czernya, Presl, Trichodon, 
Roth), two species, one of them almost cosmopolitan, only differ- 
ing from Arundo in the lowest flower of the spikelet being male 
only. These last three genera are frequently, and perhaps with 
reason, regarded as sections only of Arundo. Two Mexican 
monotypic genera proposed by Fournier, 16. Gournta, and 17. 
