152 CLXXIII. GRAMINE.E. (J. D. Hooker.) [Rotfboellia. 



sessile and both or one only perfect, the other pedicelled imperfect, with 

 the pedicel often adnate to the joint. Sessile spikelets, glumes 4, I 

 coriaceous, flat or slightly convex, obtuse or acute, rarely 1-2-awned; II 

 thinner, keeled ; III hyaline, neuter or male ; IV hyaline, 1 or 3-nerved, 

 usually paleate, palea usually 2-nerved. Lodicules 2, truncate. Stamens 

 3. Styles distant. Grain oblong or obovoid, subcompressed dorsally. 

 Species about 30, temperate and tropical. 



I have followed Hackel for the most part in the disposition of the species of the 

 first four sections of the genus. For my departure from him in the fifth see 

 remarks under Ophiurus (p. 160). 



A. Sessile spikelets solitary in all the joints of the spike. 



Sect. I. PHACELURUS, Sack. Spikes digitately racemed (rarely solitary), 

 rachis fragile, tips of joints flat, not hollowed. Spikelets 2-fld. Phacelurus, 

 Griseb. (gen.) 



1. XI. speciosa, Hack. Monogr. Androp. 282; perennial, spikes soli- 

 tary or alternate or subdigitately fascicled 2-3^ in. long, spikelets -| in. 

 1-fld., gl. I flat 11-1 3-nerved. Ischsemum speciosum, Nees ex Steud. Syn. 

 Gram. i. 375. Andropogon speciosus, Steud. I. c. Vossia speciosa, Benth. 

 in Journ. Linn. Soc. xix. (2881) 70; Duthie Grass. N.W. Ind. 18, Fodd. 

 Grass. N. Ind. 32. 



WESTERN TEMPERATE HIMALAYA, alt. 5500-9000 ft., from Kashmir to Garwhal, 

 Royle, &c. 



Stem* tufted, 1-4 ft., stout or slender, simple ahove. Leaves 6-12 by -| in., 

 linear, hispid or glabrate, margins scabrid ; sheath glabrous or margins above hairy ; 

 ligule a ciliate .border. Spikes 3-6 in., rarely solitary, glabrous, green or purplish ; 

 joints about as long as the spikelets, subclavate, trigonous, angles ciliate. Spikelets 

 Ian eolate, glabrous; gl. 'I obtuse, tip oblique, margins narrowly inflexed, keels 

 scaberulous ; II navicular, acute ; III lanceolate, 3-5-nerved ; IV elliptic-lanceolate, 

 1-nerved. 



Sect. II. THYKSOSTACHYS, Hack. Spikes panicled, lower whorled, 

 peduncled ; rachis fragile, tips of joints hollowed. Spikelets 1-fld. 



2. R. Zea, Clarke in Journ. Linn. Soc. xxv. (1889) 86, fig. 38 ; panicle 

 thyrsiform or pyramidal, spikes smaller upwards, spikelets io., gl. I 

 scabrid 1-3-nerved. Hack. Monogr. Androp. 690. K. thyrsoidea, Hack. 

 I. c. 283. 



KHASIA HILLS, alt. 2-3000 ft., J.D.H. &T.T., Clarke. MTJNNEPOEE, alt. 

 3500 ft., Clarke. UPPER BURMA ; at Carnein on the Mogaung river, Griffith. 



Stem tall, 6-8 ft., very stout, as thick as the forefinger below, erect, simple or 

 sparingly branched, nodes silky. Leaves large, 2-3 ft. by 1-1 1 in., linear, flat or 

 complicate, glabrous, margins scabrid ; sheaths subcompressed ; ligule short, truncate. 

 Panicle 10-20 in. long, long-peduncled, rachis very stout, strict. Spikes erecto- 

 patent, lower branched, sometimes distichously ; rachis stout, flexuous or zigzag, 

 joints about as long as the spikelets, subclavate, glabrous. Spikelets glabrous; gl. I 

 obtuse, dorsally scabrid, 1-3-nerved, margins narrowly inflexed, keels scaberulous ; 

 II ovate, acute, 3-nerved; III lanceolate; IV oblong, obtuse. 



Sect. III. HEMARTHRIA, Hack. Spikes solitary or fascicled, com- 

 pressed; joints coherent or subfragile, tips obliquely or transversely 

 truncate, not hollowed. Spikelets of each pair similar, pedicel of upper 

 usually adnate to the joint of the rachis. Hemarthria, Br. (Gen.). 



