OpUsme?iusP\ Graminecs. 167 



thinly coriaceous, oblong, narrowed into a straight scaberulous 

 awn shorter than itself, dorsally flat, margins narrowly in- 

 curved, glabrous; anth. dark purple; grain oval, fiat. 



Warm districts; abundant. Spikelets pale, glistening. 

 Also in India, Burma, Malaya, China. 



2. A. semialatus, Hook.f. Fl. Brit. Ind. vii. 64 (1896). 



Panicum semialatum, Br.; Thw. Enum. 358. C. P. 3239. 



Fl. B. Ind. 1. c. Griff. Ic. PI. Asiat. t. 145, f. 2 {Panicum viaticum). 



Stem 1-3 ft., erect, densely tufted, very robust at the base, 

 ■clothed with villously silky sheaths, lower internodes short, 

 upper very long, nodes villous; 1. 8-12 in., mostly subradical, 

 very narrowly linear, acuminate, strict, rigid, glabrous or 

 pubescent, base very narrow, margins fiat or involute, nearly 

 smooth, sheath more or less hairy or villous, margin ciliate, 

 .ligule a very short ridge of hairs ; spikes 2-5, subdigitate, 

 terminating a long strict more or less hairy ped., erect, 3-6 in. 

 long, rhachis rather stout, strict, pubescent, usually flowering 

 to the base ; spikelets \ in. long, solitary or binate, shortly 

 pedicelled, crowded, ovate-lanceolate, subterete, pedicels short, 

 pubescent; glumes all shortly awned, I about one-third shorter 

 than III, triangular-ovate, acuminate, hyaline, margins cilio- 

 late, II broadly ovate, as long as IV, acute, III as long as 

 IV, oblong, margins incurved, ciliate; anth. red-brown, IV 

 lanceolate, narrowed into a scabrid awn one- third shorter 

 than itself, margins narrowly incurved, pubescent, flaps of 

 palea incurved, auricled towards the base. 



Common on the patanas, up to 5000 ft. 



Hilly districts of Trop. Asia, Australia, S. Africa. 



9. OPLISMSNUS, Beauv. 

 Slender leafy grasses ; stems creeping below, branches 

 ascending; 1. ovate-lanceolate, acuminate, thin, fiat, margins 

 scaberulous, base narrow, auricled on one side, ligule a ridge 

 of long hairs ; spikelets solitary or binate, disarticulating at 

 the base, secund on a simple terminal spike or on racemed 

 spikes, subterete, awned; glumes 4, I and II empty, both 

 -usually awned, awns straight, I shorter than III, 3-5 -veined, 

 II as long or shorter than IV, 5-7-veined, III as long as 

 IV, or longer, 7-9-veined, paleate or not, empty, IV sessile, 

 lanceolate, acute or acuminate, thinly coriaceous, terete, 

 smooth, white, shining, paleate, bisexual, margins broadly 

 incurved, palea 2 -keeled ; lodicules minute; anth. 3, linear; 

 styles free, stigmas exserted at the top of the glume ; grain 



