325 
is a short plant, about 10 ins. high with narrow, flat or loosely 
convolute leaves, while the latter, which is without a base, is 
taller and much more luxuriant. The leaves are broad and flat, 
or with a tendency at the margins to roll inwards. In the Hunter’s 
River specimen they are narrow and loosely convolute. . 
10. P. prolutum /. Muell. in Trans. Vict. Inst. 1855, 46: 
Benth. Fl. Austral. vii. 490. 
S. Wares: Murray River, Mueller; Murrimbidgee River, 
-M ‘inliee. Darling River, Dallachy; Zara via Hay “ E. Officer” 
Victoria : Avoca River, Mueller. 
11. P. paludosum Rovb. Fl. Ind. i. 307 (1820); P. decom- 
positum Benth. Fl. Austral. vii. 484 (1878) p.p. non R. Br.; 
P. proliferum F. Muell. Fragm. viii. 191 (1874) non Lam. 
N. Territory : Victoria River, Mueller. 
QUEENSLAND: Archer’s Lagoon, Leichhardt; King’s Creek, 
Bowman 
12. P. decompositum RF. Br. Prod. 191 (1810). 
Key to the Varieties. 
Spikelets 2-5-3 mm. long; leaves 
usually smooth : 
Culms many-noded, slender, 1-2 mm. 
in Sees pistes long, linear, not 
over 2 mm. e - - var. tenuius. 
Culm 3-4- ‘tie stout, aa mm. in 
diameter; leaves tapering. about 
1 cm. wide at the base - var. typicum. 
Spikelets 3-5-4 mm. long; ave ‘sca- 
brid towards the tip : 
Leaf-sheaths glabrous and smooth, 
leaves narrow, about 4 mm. wide at the 
base, acuminate, long tapering to a fine 
point ; lower valvule 3-5 mm. long, Shem 
margins distinctly fringed - var. acuminatissimum. 
Leaf-sheaths shortly Srbesoeib with 
tubercle-based hairs; leaves broad at 
the base (1 cm. wide or wider) ; lower 
valvule 2 mm. long, margins very 
narrow, glabrous, or ie a few very 
short cilia - - - var. scaberrimum. 
var. tenuius F. M. Bailey, Queensl. Agric. Journ. xxx. 314 
/Qg13 
QuEENSLAND : Gindie, Bick 5, 6, 7, 8. 
var. typicum Domin in Journ. Linn. Soe. xli. 269 (1912); vial 
utile Denia Le.; P. Whitei J. M. Black in Trans. Roy. § 
8. Austral. xli. 632 (1917). 
