1910 CLIIl. GEAMINE^. [Heterachne. 



2. a. GuUiveri (after T. A. Gulliver),_ lienth. in Hook. Ic. PI. t. 1250 ; 

 il. Austr. vii. 635. Stems branching at the base and under 6in. in the 

 specimens seen. Leaves narrow. Heads of spikelets globular, 2 to 3 lines 

 diameter, several sessile in a more or less interrupted pedunculate spike of 1 to 

 2iil., the rhachis of the head hairy between the spikelets, the general axis 

 glabrous. Spikelets almost sessile, orbicular, scarcely above 1 line diameter, 

 almost entirely occupied by the flowering glume and palea, which are broader 

 than in H. Brownii, the glume 3-nerved, the keel winged and shortly ciliate at 

 the end, the wings of the palea thin but not hyaline, shortly ciliate. Outer 

 empty glumes smaller, unequal, the lowest 1 -nerved, the 2nd 3-nerved but the 

 keel not winged. Upper empty glumes 3 to 5, like the flowering one but 

 narrower. 



Hab.: Between Norman and Gilbert Rivers, Gulliver. 



80. TRIRAPHIS, E. Br. 



(Referring to the three needle-like awns of the flowering glume.) 

 Spikelets several-flowered, in a terminal panicle, the rhachis of the spikelet 

 articulate above each glume, the terminal glume usually empty or with a male 

 flower. Outer empty glumes unawned, entire or the 2nd occasionally notched 

 with a short point in the notch. Flowering glumes with 3 narrow lobes tapering 

 into straight awns, the central occasionally with a short lobe or point on each 

 side, or all 3 reduced to small teeth. Palea narrow. Styles distinct. Grain 

 enclosed in the thin or coriaceous glume and palea, free £rom them. 

 The genus is limited to Australia. 



Panicle soft and dense. Flowering glumes hairy, with a pointed lobe or short 

 awn on each side of the central awn . 1. T. mollis. 



Panicle loose. Flowering glumes coriaceous, with 3 entire awned lobes. 



Stems and leaves glabrous. Outer glumes under 2 lines long. Flowering 

 glumes shortly silky-pubescent . . 2. T. pung'ens. 



1. T. mollis (soft), R. Br. Prod. 185 ; Benth. Fl. Austr. vii. 603. A glabrous 

 rather slender erect grass attaining 2ft. but sometimes much smaller. Leaves 

 long and narrow, ending in fine points. Panicle narrow, dense, 6 to lOin. long, 

 with a soft look owing to the slender awns and hairs of the glumes. Spikelets 

 crowded on the short erect branches, narrow, about ^in. long without the awns, 

 with 8 to 10 or even more flowers. Glumes narrow, membranous, about 1^ line 

 long, the 2 outer empty ones glabrous, entire or the 2nd with a short tooth on 

 each side of the point. Flowering glumes sprinkled with a few long hairs, the 

 central capillary awn 3 to 4 lines long, with a pointed lobe or short awn on each 

 side, the lateral awns rather shorter. — F. v. M. Fragm. viii, 108 ; Turner Austr. 

 Gr. PI. 



Hab.: Thirsty Sound, JJ. Brown ; Port Curtis, M'Gillivray; Eockhampton and neighbouring 

 districts, O'Shanesy and others. 



2. T. pungens (pungent), R. Br. Prod. 185 ; Benth. Fl. Austr. vii. 604. A 

 glabrous slender grass of about 2ft., branching at the base. Leaves chiefly in 

 the lower part, very narrow and convolute, often subulate and rigid. Panicle 

 loose but narrow, 3 to 4in. long. Spikelets 4 to 5 lines long without the awns. 

 Outer empty glumes glabrous narrow, coriaceous, 3 lines long or rather more, 

 entire. Flowering glumes shorter below the division, coriaceous, shortly silky- 

 pubescent, the 3 awns nearly equal, all entire and slightly dilated and rigid at 

 the base. 



Hab.: Islands of the Gulf of Carpentaria, R. Brown. 



