EKonurus.] CLIII. GKAMINE^. 1861 



broad pedicel, the outer glume narrow, very acute, spreading, fringed with long 

 cilia, the 2nd erect rather shorter, the prominent keel produced into a fine point, 

 the 3rd small and hyaline ; no flower. Sessile spikelet erect and appressed, much 

 flattened, 5 to 6 lines long. Outer glume lanceolate, 7-nerved, the 2 lateral 

 nerves thickened ciliate and produced into long erect ciliate lobes or thick points, 

 2nd glume i as long, finely pointed.— /^Hrfr.i/jo.^oM citreiis, R. Br. Prod. 203. 

 Hab,: Northumberland Islands, R. Broion. Common along the rivers in tropical localities. 



43. HETEROPOGON, Pers. 



(Variable beard.) 



Spikelets 1-flowered, monoecious, in pairs in the notches of the articulate 

 rhachis of a simple 1 -sided spike, the females sessile, cylindrical, turned to one 

 side of the spike, the males lanceolate, awnless, shortly pedicellate, imbricate on 

 the other side of the spike. Glumes in the female spiicelet 4, the outer one hard 

 convolute, the 2nd keeled, the 3rd very thin and hyaline, 4th or terminal glume 

 a hard twisted and bent awn, attenuate and flexuose or narrow and hyaline at 

 the base as in Andropogon. Paleas very small and thin or none. Styles distinct. 

 Grain enclosed in the hardened glumes but free from them. 



A genus of several species, chiefly tropical, in the New as well as the Old World. Both the 

 Australian species extend into tropical Asia, and one over the general area of the genus. 

 — Bentli. 



Spikes about 2in. long ; male spikelets 3 to 4 lines 1. H. contortus. 



Spikes 3 to 6in. long ; male spikelets Jin 2. H. insignis. 



1. H. contortus (twisted), Roem.. et Schult. Syst. ii. 386 ; Benth. Fl. Austr. 

 vii. 517. Bunch Spear-grass. Stems ascending or erect, 1 to 2ft. high. Leaves 

 narrow, ciliate with a few long hairs, the sheaths flattened. Spikes pedunculate, 

 1 to 2in. long without the awns. Male or barren spikelets 3 to 4 lines long, 

 green, ciliate, closely imbricate in 2 rows along one side of the spike almost 

 concealing the females. Female spikelets narrow, the outer glume hard, obtuse, 

 convolute, the 2Qd narrow with a hard centre, the hairs surrounding the 

 spikelet brown and silky. Awn protruding often to 2in. and very much twisted. 

 — Duthie Ind. Gr. PL xix. ; Aiidropoqon contortus, Linn. ; Kunth, Enum. i. 486 ; 

 R. Br. Prod. 201 ; F. v. M, Fragni. viii. 120; Reteropogon hirtus, Pors. Syn. 

 ii. 533 ; Andropoc/on striatus, R. Br. Prod. 201. 



Hab.; Swears Island, Henne ; Keppel Bay, R. Drown; Tindes.vomcB.Wer, Banks and Solander ; 

 I'ioicth-ea.st coast, A. Cunningham; Eookingham Biy, Dallachy ; IMoreton Bay, F. v. Mueller, 

 Bailey, Leichhardt; Eockhampton, Shanesy ; Springsure, IVuth. 



The fungus Cerebella andropogonis, Cess, is at times met with on the inflorescence of this 

 grass. , 



2. H. insignis (remarkable), Thw. E'mim. Ceyl. PL 437 ; Benth. hi. Austr. 

 vii. 517. A much more robust plant than H. contortun, attaining from 8 to 10ft. 

 Leaves narrow, with flattened sheaths, glabrous or rarely sprinkled with long 

 loose hairs. Spikes 3 to 6in. long without the awns. Lower male or barren 

 spikelets lanceolate, acute, about ^in. long, the uppsr ones more acuminate and 

 contracted at the base, often fin.' long. Outer glume glabrous, the 2nd with 

 inflexed hyaline ciliate margins. Female spikelets 3 to 4 lines long, brown and 

 pubescent on a short villous brown pedicel. Outer glume obtuse, the midrib 

 thick and prominent, with a furrow on each side. Awn 3, 4 or even 5in. long. — 

 Andropogon triticeus, R. Br. Prod. 201 ; F. v. M. Fragm. viii. 120. 



Hab.: Islands of the Gulf of Carpentaria, R. Brown; Bountiful Island, Henne; Lord 

 Howiok'sgroup, .P. !). ifiieHer; Rockingham Bay, Dallachy; Rockhampton, Bownian, Thozet, 

 O'Shanesy. 



Also in Timor and Ceylpn, 

 Part VI. ^ 



