Andropogon^ GTCLWlineCB . 229 



Subgen. 5. Dichanthium. 

 Glume IV of sessile spikelet reduced to an 



awn 11. A. caricosus. 



Glume IV of sessile spikelet 2-fid, awned in 



the sinus 12. A. polyptychus. 



Subgen. 6. Heteropog-on. 



Spikes \-i in., glume I flat . . . . 13. A. CONTORTUS. 

 Spikes 3-6 in., glume I deeply channelled . 14. A. triticeus. 

 Subgen. 7. Schizachyrium . . . 15. A. hirtiflorus. 

 Subgen. 8. Cymbopogron. 



Column of awn glabrous or nearly so. 



Ped. of spikes shorter than the proper bracts. 

 Panicle large, compound, spikelets ^-\ in. 

 Leaf-base broad, cordate . . . 16. A. Schcenanthus. 

 Leaf-base narrow, not cordate . . 17. A. Nardus. 

 Panicle narrow, spikelets \-\ in. . . 18. A. Thwaitesii. 

 Ped. of spikes longer than the proper bracts 19. A. LIVIDUS. 

 Column of awn hirsute 20. A. filipendulus. 



1. A. Pseudischaemum, Nees ex Stend. Syn. Gram. 380 (1854). 

 A. scandens, Thw. Enum. 368, non Roxb. A. oryzetoriem, Hack. 

 Monogr. Androp. 477. C. P. 3258. 

 Fl. B. Ind. vii. 172. 



Perennial; stems 1-2 ft, tufted, erect, slender, leafy, simple 

 or branched, sometimes fasciculately, the branches all flowering, 

 nodes glabrous, upper internodes filiform ; 1. 6-10 in., almost 

 filiform or up to T V in. broad, linear, finely acuminate, smooth, 

 dark glaucous-green, midrib pale, base narrow, sheaths slender, 

 terete, smooth, mouth with rounded membranous auricles, 

 ligule a narrow membrane; spikes 4-6, subdigitately fascicled, 

 slender, erect, sessile or shortly peduncled, reddish, rhachis 

 filiform, fragile, ciliate ; sessile spikelets fern, or bisexual, 

 twice as long as the internodes or less, A-g- in. long, lanceolate, 

 subacute, callus short, shortly bearded ; glume I thin, about 

 7-veined, dorsally hairy below the middle, margins narrowly 

 incurved, rigidly ciliate above the middle, II lanceolate, acute, 

 ciliate, 3-veined, III much shorter, narrowly oblong, ciliate, 

 veins o, IV the flattened membraneous base of the capillary 

 awn, which is about twice as long as the spikelet ; pedicelled 

 spikelets narrower and more oblong than the sessile, with no 

 glume IV, pedicel ciliate. 



Hot drier parts of the Island, especially on margins of rice-fields 

 (Thwaites). 



The Deccan Peninsula. 



Hackel distinguishes Thwaites's Ceylon plant under the name of 

 A. oryzetorum from A. Pseudisch<zmum, Nees, by the long bearded 

 nodes, leaves scabrid on both surfaces, longer ligule and other minor 

 characters. These, however, do not hold in the Peradeniya Herb, 

 specimens, in which the nodes of the stem are perfectly naked, the 

 Jeaves only faintly scaberulous, and the ligule short. 



Mr. Ferguson says of this grass (Gram. Indig. to Ceylon, 35): ' I found 



