CXLIV. GRAMINER. 509 
17. PEROTIS, Ait. 
Spikelets 1-flowered, sessile or shortly pedicellate s the con- 
tinuous rhachis of a loose simple spike or raceme. mes 3, 2 outer 
T 
hyaline, the palea still smaller. Styles very shortly united at the base, 
the plu umose d short. rain eee bro longer than the 
The g Edi over tropical and sub-tropical Asia ae Africa, the Soie 
species, re'as allied to the omamo Asiatic and African one, appears to be repre 
sented in the Malayan Archipelago. 
. P. . Br. Prod. 172.—Stems from a decumbent or 
Waieling udin slender, ascending to 1 ft. or fadi more. Leaves 
linea ar, with subulate points, glabrous except a few marginal cilia 
a rific t ike or 
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e nen almost sessile, in a on Freie và of 1 to above 5 line long, 
3 li 
long Wibont the fine Vis are 3 t Outer glume 
with a prominent keel, sometimes glabrous, in a liv speeimens eiliate 
with rather long hairs, 2n me similar but rather shorter and 
harrower.—F, p e Fragm. viii. 
alia. n Norman and Gilbert Rivers, Gulliver ; in the interior of 
Amon 8 Land, at Donati Stuart. i 
eensland, Curtis and Cape Upstart, ie age E Port Denison, 
Fi alan s DE pie i numerous stations in South Queensland, Bowman, 
Soma nesy and many others; Balonne River, Mitchell ; ps "Cooper s s Creek, 
h generally very different from the common tropical species of Perotis 
gu arid Ait. with broader leaves and much shorter "ria there certainly 
o be connecting forms, especially that simi the Islands which 
Tiri described: as Xystidium maritimum, and which has been ae a slight 
arl of P. 
ge II. R S in pairs or rarely 
itary, in alternate notches of the fired are of a simple spike, 
one uim fertile and more or less embedded ina cavity of the rhachis, 
the other pedicellate and barren or rarely fertile. 
This sub rs from the spicate Euandropogoneze in the total absence of ~ 
rye and in the cain more deeply tgp for the "ge n of Reams dy oris 
ew species of Jschemum are however s it were 
Sübtribes. 
18. qm cre Willd. 
Spike lets in pairs, in e alternate notches of the T— 
of a a simple spike, 1 die with 1 hermaphrodite flower, the Sdn 
