560 CXLIV. GRAMINES. 
it appears to me however that the three ascen form a group bearing the sa 
relation to Festucace:» which the SR gon o to Panicew, the chief charter 
residing in the twisted awn and the generally edad d palea. In neither case can 
any = za ct line be drawn without the interposition of one or two exotic genera 
or sp 
SUBTRIBE I. SmrPACEX. — Spikelets 1-flowered, paniculate, the 
shachis not produced beyond the flower. Flowering glume closely 
enveloping the palea, with a terminal simple or trifid awn. Lodicules 
(always?) 3. Grain usually narrow, enclosed in the more or less 
hardened glume. 
48. ARISTIDA, Linn. 
Spikelets 1-flowered, on filiform pedicels or nearly sessile ET 
terminal panicle, the rhachis the spikelet articulate above the 
outer glumes. Glumes 3, narrow, 2 outer usually persistent, e 
empty and unawned ; terminal or E dawating glume d rigid, rol i 
round the flower, entire, with a terminal trifid a Palea smat, 
enclosed in the flowering ne: Styles dist uer ean narrow, 
with the stipes and awn in Stipa.—All the Australian species 
glabrous, with convolute more or less subulate leaves. 
is ic a 
genera, the Australian species of each section run much into each other, and or the 
tinguished by rper be wd ond the propor p aant dimensions of the parts o 
rode and spikelets 
Arth sh da 
Szcr on articulat th me, entire —— twisted 
ide d the cud Flou 
h shorter than uem outer o 
Awn 2 i i 
wn ih — long below the branches, which are at least 1. A. hygrometrica. 
Awn — ut in. below the "branches, which vary from 13 1 
i 
9. A. stipoides. 
A to à i ; 
"i Sag Ha, below t the branches, v which vary f from 1 to i MM 
hes, 
Section II. Chetarie.— A not articulate ae agreed a the glume into 8 se ae ul 
the glume itself when barr. the a Flowering glum 
as long or longer than the pos ones. 
Panicl 
anic misi broad and dense, Glumes 1 in. long. Awns 4. A. Behriana. 
Panis b branches very lon 3 at length spreadin ; "with few 
spikelets - one poli lion ls. ee ties least 3 Rin. long 5. A. leptopod?. 
Panicle loose, at length pyramidal. Pedicels short. Outer 
lumes 2 to 3 lines 
h 
; pee Awns short > TE ities piume. muc 6. A. vagans. 
Panicle narro M thas loose. Outer glumes aslong as the 
flowering one. 
lines. Awns under +4 in, 1 Paige 
Glumes*4 to 6 lines. Awns to 1in. lon ng. mesh QU 8. E calyeina, 
