1884 CLIII. GRAMINE^. [Deyetixia. 



2 lines long. Flowering glume shorter, broad hyaline and rolled round the 

 flower, the 2 nerves on each side more or less produced into acute teeth or points. 

 Awn attached much below the middle or close to the base, usually not much 

 longer than the outer glumes. Palea narrow. Rhachis of the spikelet hairy 

 round the flower, produced sometimes into a minute bristle which however 

 appears to be generally deficient. — Avena giiadriseta, Labill. PI. Nov. Holl. i. 25, : 

 t. 32 ; Agrostis quadriseta, R. Br. Prod. 171 ; Trin. Spec. Gram. t. 83 ; Hook, 

 f. Fl. Tasm. ii. 114; Buch. Ind. Gr. N.Z. xxvi. ; A. lobata, R. Br. I.e.; 

 A. diaphora, Trin. in Mem. Acad. Petersb. ser. 6, vi. 386 ; Bromidimn quadrisetum, 

 Nees in Hook. Lond. Journ. ii. 416; B. lobatum., Nees I.e. 415. 



Hab.: Stanthorpe. Also in New Zealand. 



3. S. scabra (rough), Benth. FL Austr. vii. 588. Stems usually weak and 

 decumbent, 1 to 2ft. long. Leaves flat, flaccid. Panicle loose, varying from 

 2 to Sin., the capillary branches short, scattered or in twos or threes, distant in 

 the longer panicles, few in the short ones, not very spreading. Outer glumes 

 1 to IJ lines long, acute, keeled or the 2nd 3-nerved. Flowering glumes scarcely 

 shorter or at length rather longer, membranous, rather stiff in fruit and minutely 

 scabrous-pubescent, the awn minute and straight, attached far above the middle 

 and usually not exceeding the glume. Palea almost as long, rather broad. 

 Rhachis with few hairs and produced into a bristle minute and glabrous or 

 longer -and hairy. — Agrostis scabra, R. Br. Prod. 172; Hook. f. Fl. Tasm. ii. 116; 

 t. 160 ; A. rudis, Roem. and Schult. Syst. ii. 360 ; Calamagrostis rudis, Steud. 

 Syn. Glum. i. 192 ; A. contracta, F. v. M. ; Herb. Hook. f. I.e. t. 161 ; 

 A. decipiens, R. Br. Prod. 172 ; Cinna decipiens, Kunth, Enum. t. i. 207. 



Hab.: Condamine River, Hartmann. 



60. DICHELACHNE, Endl. 

 (Referring to the 2-lobed flowering glume.) 



Spikelets 1 -flowered, numerous in a narrow usually dense panicle, the rhachis 

 of the spikelet articulate immediately above the 2 outer glumes and not continued 

 beyond the fljwer. Glumes 8, acute, the 2 outer ones persistent, membranous, 

 acute, keeled. Flowering glume raised on a short hairy stipes (rhachis of the 

 spikelet), membranous at the time of flowering, hyaline and entire or 2-lobed at 

 the end, with a fine scarcely twisted dorsal horn a littie below the end 

 slightly hardened round the fruit. Palea 2-nerved. Stamens 8 or fewer ; 

 anthers glabL-ous. Styles distinct. Grain enclosed in the glume and palea, free 

 from them. 



The geaus is probably limited to the two Australian species which extend to New Zealand. 



Panicle very dense, the awns above lin. long, very numerous and concealing 



the spikelets 1. D. crhiita. 



Panicle rather loose, the awns 6 to 8 lines long . . 2. D. sciurea. 



1. B. crinita (hairy), Hook. f. Fl. N. Zel. i. 293, i'L Tasm. ii. Ill; 

 Benth. Fl. Austr. vii. 574. Long-haired Plume Grass. Stems 2 to 3ft. high. 

 Leaves flat, glabrous or softly pubescent, the upper ones rather long with long 

 sheaths. Panicle very dense and spikelike, 4 to Sin. long, the spikelets imbricate 

 on the short erect branches but concealed by the numerous long hairlike awns. 

 Outer glumes very narrow, hyaline with a slightly scabrous keel, nearly equal, 

 about 2J lines long. Flowering glume shorter, glabrous, the hyaline tip entire 

 but readily splitting. Awn dorsal, very slender, bent but scarcely twisted, above 

 lin. long.— Buch. Ind. Gr. N.Z. Pi. xv. ; Turner Ag. Gaz. N.S.W. ii. ; Bail. 111. 

 Gr. Q. i. ; Anthoxanthmn crinituin, Linn. f. Suppl. 90 ; Labill. PI. Nov. Holl. 

 ii. 116, t. 263 ; Agrostis crinita, R. Br. Prod. 170 ; Muehlenbergia crinita, Trin. 



