26 
Nancy T. Burbidge. 
longae, apicibus pungentes. Paniculae contractae, angustae. Spiculae brevi- 
ter pedunculatae, lateraliter compressae, lineares, 4-6 mm. longae, 3 mm. 
latae, pallidae. Anthoecia 4-6. Glumae oblongae, obtusae, laeves, suba- 
equales, marginibus minute ciliolatis, 1-nervo, 2 *5-3 mm. longae. Lemmata 
lanceolata, scariosa, 3-nervis, 3 mm. longa, basi villosa, apicibus trilobata ; 
lobi acuti, nervosi, minute ciliolati, subaequales. Palea e oblongae vel lanceo- 
atae, 2 mm. longae, nervis anguste alatis. (PI. 3, fig. 7.) 
This species lies between T. longiceps J. M. Black and T. microstachya! 
R.Br. It differs from the former in its smaller spikelets, scarious lemmas with 
acute lobes and the ciliate, pubescent leaf sheaths and from the latter in its; 
one-nerved glumes, basally pubescent lemmas and narrowly winged nerves 
of the paleas. Its distinctive character was pointed out to the author by 
Mr. C. A. Gardner who suggested naming it after its discoverer. It is known 
from the type specimen only. 
Distribution.— Dillon’s Springs, East Kimberley, IF. V. Fitzgerald 1643 
(type !). 
Triodia longiceps J. M. Black in Trans. Roy. Soc., S. Aust., liv. 59 : 1930. 
A perennial grass forming large rather loose tussocks (up to four or five 
metres in diameter and 2-4 metres in height) and having long stolons extending 
beyond. Culms smooth and glabrous, branching from the upper nodes. 
Leaves very rigid, glaucous, the sheaths and blades glabrous or minutely 
puberulous and with very short cilia on the orifice of the sheath ; ligule a row 
of short cilia ; apex very pungent pointed. Panicle 20-50 cm. long, with the 
spikelets shortly pedunculate on the lateral branches which spread at anthesis. 
Sjnkelets linear, with 6-21 florets, 8-20 cm. long, 2-5-3 mm. wide, with the lem- 
mas imbricate or spreading. Glumes lanceolate or almost ovate, glabrous, 
subequal 3 -5-4 mm. long, with one slightly prominent nerve extending to the 
acute or acuminate apex. Lemmas lanceolate or ovate, 4 mm. long, indurate,, 
glabrous or w ith a basal tuft of short hairs, the nerves reduced (from three- 
groups of three each) so that only one nerve extends to each lobe but at the* 
base of the lemmas the vestiges of the lateral nerves of each group are more 
or less developed ; the apex with three very short, subequal, acute lobes in 
the Western Australian material though, in his description, Black says the 
lateral lobes are obtuse with a short mucro between. Palea 3 mm. long, 
oblong or lanceolate with prominently winged nerves, glabrous, the upper 
half usually free from the lemma and conspicuous. (PI. 3, fig. 8.) 
In the field the general habit approaches that of T. angusta but it is a 
coarser plant and the panicle is quite distinctive. Both species show a prefer- 
ence for the banks of water courses and flats liable to flooding. The chief 
affinity seems to be with T. microstachya from which it differs in the one 
nerved glumes and the winged, glabrous palea. 
Distribution. — Pardoo Station, Burbidge 1519 ; De Grey Station, Ander- 
son, also Burbidge 1544 ; Warralong Station, Melville 28 and Burbidge 791 ; 
Muccan Station, Burbidge 911 and 965 ; Marble Bar, Stewart ; Mount Edgar 
Station, south-east from Marble Bar, Burbidge 1066, 1067, 1129, 1192, 1138 
Nullagine, Melville. 
Triodia angusta N. T. Burbidge sp. nov., affinis T. microstachyae R.Br.. 
sed glumis inferioribus 1 -nervis, acuminatis, spicis angustioribus, linearibus, 
lemmatibus sparsim pubescentibus differens. 
Gramen perenne, caespites late extensos densissimos formans et stolones 
•elongatos emittens. Culmi divaricati, rigidissimi, glabri, laeves, simplices vel 
