A Revision of the Western Australian Species of Triodia R.Br. 27 
basi ramosi, 6-12 nodis. Foliorum vaginae induratae, laeves, glaucae ; ligulae 
ad seriem ciliorum redactae ; laminae angustiores vaginarum, breviter petio- 
latae, rigidae, conduplicatae, apicibus pungentibus, marginibus ciliolatis, 
12-20 cm. longae. 2 mm. latae explanatae. Paniculae contractae, anguste 
lineares, 15-20 cm. longae, 7 mm. latae ; rhachis scabra, angula ris ; spicae 
simplices, breviter pedunculatae, anguste lineares. Spiculae sessiles, secundae, 
lateraliter compressae, oblongae vel lineares, angustae, biserratae, pallidae, 
2 mm. latae, 4-5 mm. longae. Anthoecia 3-4. Glumae lineares vel lanceolatae, 
acuminatae vel aristulatae, scariosae, scabridulosae vel glabrae, nervis sca- 
bridis ; inferior 1-nervo, 2-3 mm. longa ; superior 3-nervis, 3-4 mm. longa. 
Lemmata lanceolata vel anguste ovata, membranacea, 3-nervis, 2 -5-3 mm. 
longa ; margines glabrae vel raro pubescentes ; apices trilobatae ; lobi nervati, 
•erecti, acuti, lobi laterales paullum breviores quam medii. Paleae ellipticae, 
membranaceae, 3 mm. longae, nervis ciliolatis. Lodiculae 1 mm. longae. 
Antherae 2-2 -5 mm. longae. Caryopsis O. (PI. 3, fig. 9, a-f, fig. 11, a-b.) 
In the field this species is readily distinguished from T. secundci by the 
glaucous foliage. It has a denser tussock being formed of a central tuft with 
radiating stolons. The stolons have terminal tufts of erect culms. The 
leaves have a very small auricular ridge which bears hairs about as long as 
those of the ligule proper. However, some material collected, by the author, 
at Shaw River had woolly sheaths while a specimen from Taiga Gap, near 
Coongan railway siding, had very long hairs on the ridge. Since there is no 
special panicle difference which can be correlated with these leaf variations 
they are all included under the species. Apart from these exceptions the 
leaves and sheaths are glabrous in all specimens though the margins of the 
blades are commonly scabrid with minute teeth. The one nerved glumes 
serve to divide the species from T. microstachya R.Br., also the smaller narrower 
spikelets. 
Cunningham’s specimen from the 4i North-West Coast,” which is listed 
under T. microstachya by Bent ham in the Flora Austral iensis, belongs to this 
species. It was identified by the author while at the Kew Herbarium in 1940. 
The species is commonly referred to as Blue Buck. It is of no pastoral 
importance. It is a very common species and in the field, when panicles are 
missing, it may be confused with T. longiceps. It is usually found along the 
banks of rivers and creeks. 
Distribution. — Coongan Station, Anderson ( Burbidge 452 type ! and 445) ; 
Warralong Station, Burbidge 828 ; Shaw River, Burbidge 1216 ; Taiga Gap 
near Coongan Siding, Burbidge 1051 ; Hills south of Mount Edgar, Burbidge 
1151 ; Waramble Station, Roebourne, H. G. Meares ; Sandstone rocks, 
Gregory’s Gorge, Fortescue River, Gardner 6296 ; Karatha, west of Roebourne 
Gardner 626. 
Triodia secunda N. T. Burbidge sp. nov., affinis T. angustae N. T. Bur- 
bidge sed spicis latis linearibus, lemmatibus divaricatis, lemmatum marginibus 
•clifterens. 
Gramen perenne caespitosum et stolones elongatos emittens. Cut mi erecti 
vel prostrati, rigidissimi, nodis superioribus ramosi, glabri, laeves. Foliorum 
vaginae induratae, tenuiter, striatae vel laeves, glabrae, pallidae vel stramineae; 
ligulae ad seriem ciliorum redactae ; auriculae erectae, fimbriatae ; fimbrae 
ciliolatae ; laminae angustiores vaginarum, breviter petiolatae, rigidae, virides, 
divaricatae, conduplicatae, 6-12 cm. longae, 2-3 mm. latae explanatae ; apices 
pungentes, margines ciliolatae. Panicidae contractae, anguste lineares ; spicae 
simplices, distantes, latae lineares, rhachi adpressae, 1-3 cm. longae. Spiculae 
