424 GRAMINE^. [Andropoffon. 



lines long, the sessile ones nearly ovoid, the twisted awn usually protrading 

 to I or f in., but sometimes wanting, the pedicellate one naiTOwer, male or 

 neuter and awnless. 



Hongkong, Hance. In Ceylon and the plains of India, in the Archipelago, extending to 

 N. Australia, and northward to the Philippiaes and S. China. Allied to A. halepensis, Linn., 

 but readily known by the much smaller spikelets and the brown hairs. 



6. A. Martini, Uoxh. ; Nees, PL Meyen. 189. Stems erect, often 

 branching, 3 to 6 ft. high. Leaves long and narrow. Panicle narrow, 4 to 

 6 in. long, with a leafy or sheathing bract at each ramification, the last sheaths 

 about \ in. long, each containing usually 2 spikes of about \ in., on a short 

 common pedicel. Rhacliis and pedicels silky-hairy. Sessile spikelets about 

 2 lines, 2 nerves of the lowest glume and keel of the second bordered by a 

 narrow wing. Flowering glume wdth 2 almost filiform points between which 

 arises a very slender twisted awn of about \ in. 



Hongkong, Hance. On the adjacent continent and in the hilly districts of N. India, the 

 Peninsula, and Ceylon. 



26. HETEROPOGON, Pers. 



Spikelets moncecious, 1 -flowered, in pairs, in a simple 1 -sided spike, the 

 rhachis articulate, at least towards the top. Female spikelets sessile, cylin- 

 drical, turned to one side of the spike, the outer glume hard and convolute, 

 the second keeled, the third very thin and transparent, the flowering glume 

 reduced to a long stiff twdsted awn ; palea small or none. Male spikelets 

 lanceolate, herbaceous, awnless, imbricate on the other side of the spike on 

 short pedicels. At the base of the spike the spikelets are often all male or 

 neuter. 



A genus of several species, chiefly tropical, both in the New and the Old World. 



1. H. hirtus. Per 8. Syn. ii. 353. Stems ascending, slightly branched, 1 

 to 2 ft. high. Leaves narrow^ ciliate with a few long hairs, the sheaths flat- 

 tened. Spikes pedunculate, 1 to 2 in. long without the awns. Male or barren 

 spikelets about 4 lines long, green, ciliate, closely imbricate in 2 rows along 

 the back of the spike, almost concealing the females, which are brown, narrow, 

 very stiff, rough with short hairs, and suiTounded by brown silky haii'S at the 

 base, the stout twisted brown awns protruding to above 2 in. — Andropogon 

 cuntortus, Linn. ; Kunth, Enum. i. 486. 



On roadsides, Hance and others. Common in tropical Asia and Africa, and in some parts 

 of tropical America. 



27. CHRYSOPOGON, Trin. 



Spikelets 1 -flowered, naiTow-lanceolate, 3 together, tenninating the branches 

 of an erect panicle, the central one sessile and hermaphrodite, the 2 lateral 

 ones pedicellate and male. Glumes and flowers of Andropogon, sect. Amphi- 

 lophis from which this genus differs in all the spikes being reduced to the ter- 

 minal article. 



A small genus, dispersed over tropical and subtropical Asia, Africa, and Australia, with 

 one species extending into southern Europe. 



1. C. aciculatus, Trln. Stems tufted or creeping and rooting at the 

 base, then erect and stilt", about a foot high. Leaves short, the lower ones 



