16 
PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 
Following is the revised synonymy and description of the species: 
Aristida utilis F.M.Bail. in Queensl. Agric. Jonrn. xviii. 340 
(1907), Compreh. Catal. 622 (1913), but not the reference and figure 
in Queensl. Agric. Journ. xxx. 316, t.46 (1913)*; Domin in Biblioth. 
Bot. xx. heft 85, 341 and t.15, f. 15-17 (1915) ; Henr. Meded. Rijks Herb. 
Leiden liv.B, 651 (1928), lviii. 143-4, t.55 (1929). 
Streptachne stipoides R.Br. Prodr. 174 (1810) ; Benth. FI. Austral, 
vii. 572 (1878); F.M.Bail. Queensl. FI. vi. 1878 (1902), Compreh. 
Catal. 623 (1913) ; Hughes, Kew Bull. 1922, 302 (1922) ; not Aristida 
stipoides Lam. nor A. stipoides R.Br. 
Stipa Streptachne F.Muell. First Census, 133 (1882), Sec. Census 
223 (1889) ; F.M.Bail. Syn. Queensl. FI. 650 (1883), Catal. PI. Queensl. 
56 (1890) ; nomen illegit. 
Aristida streptachne Domin in Biblioth. Bot. xx. heft 85, 342 
(1915). Henr. Meded. Rijks Herb. Leiden liv.B, 597 (1928), lviii. 147, 
t.57 (1929). 
A closely tufted perennial grass with intravaginal innovations. 
Culms usually oblique to more or less straggling, rarely more or 
less erect, usually straight in the lower part, including the panicle 
usually 6-10 dm. long, very slender, terete, simple or sparsely branched, 
3-5-noded, the nodes not prominent, the uppermost internode very long 
and up to 45 cm. long, finely striate, scabrid but glabrous, the others more 
or less subequal but irregular, densely pilose with appressed rather 
long silky hairs. Leaf-sheaths usually shorter or the lowermost longer 
than the internodes, tight, terete, striate, minutely scaberulous, sometimes 
with a few long fine hairs near the margin in the lower part and the 
scarcely prominent nodes, otherwise glabrous; ligule a minutely but 
densely ciliolate rim in all about 0-25 mm. long; auricles indistinct, 
more or less bearded; collar glabrous, smooth; blades more or less 
flexuous with the old ones strongly so and more or less coiled and 
persistent, tapering to a filiform point, at first conduplicate-terete, soon 
becoming flat or somewhat concave, the upper surface and margins 
decidedly scaberulous and sometimes with a few long fine hairs towards 
the base, the lower surface less distinctly scaberulous to nearly smooth, 
for the most part 10-20 cm. long, 1-1*4 mm. wide, the uppermost often 
not much shorter than those below. Panicle long-exserted, rather 
scanty, narrow, contracted to rather loose, occupying about half the 
length of the plant ; common axis about 5-8-noded, very slender, semi- 
terete, striolate, scaberulous below, more scabrous above, glabrous 
except for a few hairs (sometimes very short) at the axils of the 
branches; primary branches solitary or binate, the longer (when binate) 
with the spikelets included about as long as the intemodes of the axis, 
filiform-trigonous, suberect or slightly spreading, straight, scabrous, 
naked for some distance when binate or if solitary then sparsely divided 
from close to the base, up to 8*5 cm. long, each bearing with its divisions 
up to about 10 spikelets; pedicels filiform-trigonous, slightly thickened 
at tip, scabrous, sometimes with a few long fine white hairs, the lateral 
ones about 1*5-5 mm. long, the terminal ones longer, up to 13 mm. long. 
Spikelets purplish to pallid, not much gaping. Glumes subequal or 
one or the other distinctly the longer though rarely by so much as 
2 mm., glabrous, rather firm, straight, narrow-lanceolate, shortly awned, 
one or the other or sometimes both narrowly contracted or even minutely 
* These notes and figure refer to specimens of A. perniciosa Domin. , 
