68 CLXXIII. GRAMINE.E. (J. D. Hooker.) [Oplismenus. 



6. Slender, diffusely branched below ; spikes few, distant, very slender ; spikelets 

 few, silkily villous, pale green, gl. I 3-5-nerved ; II 5-7-nerved ; III 7-9-nerved, its 

 palea narrow tip ciliate. Of this there are three forms or varieties, a, stem 2 ft., rather 

 stout, leaves 3-4 in. linear-lanceolate, spikes 2-3 in., awns in. Penang:, Curtis, n. 

 1102. b, Yery slender, leaves 1-1| in., awns shorter. O. indicus, Wight Cat. n. 

 1652. Ceylon, Thwaites (CP. 3963) o. very slender, leaves f-1 in., spikes 2-3, 

 short, gH I as long as its awn. Ceylon, Thwaites (CP. 3964). 



^ 3. O. Burmannii, Beauv. Agrost. 54; decumbent, flaccid, leaves ^-1 



in., spikes $-5 short! spikelets secund closely imbricate awns pale capillary. 



Roem, 8f Sch. Syst. ii. 484. Kunth Revis. Gram. i. 44, Enum. i. 139, Suppl. 



101 ; Trin. Sp.'Gram. Ic. t. 193 ; Dalz. $ Gibs. Bomb. Fl. 291 ; N.E. Br. in 



Gard. Chron. (1886) ii. 776 ; Franch. fy Sav. Enum. PL Jap. ii. 160 ; Wight 



Cat. 11. 1650; Duthie Grass. N.W. Ind. 8, Indig. Fodd. Grass, t. 47, Fodd. 



Grass. N. Ind. 13. 0. africanus. Beauv. Fl. Owcur. ii. 15, t. 68, f. 1 ; Kunth 



.Enum. i. 141. 0. albus, &oem. cc Sch. Syst. ii. 890. 0. brasiliensis, Raddi 



Agrost. Bras. 400! 'pV'Tj.romoides, Beauv. Agrost. 54 ; &oJer^Borl. 'Maurit. 



366. O. Humboldtianus, JVees Agrost Bras. 264 ; Presl Rel. Usenk. 



i. 322. TTi^ingicTi?, "Roem. $ Sch. I.e. 484; Duthie Grass. N.W. Ind. 8. 



QxthopogonTBurmanni, Br. Prodr. 194; Miq.Fl. Ind. Bat. iii. 442 ; Reichl. 



Ic. Fl. Germ. i. t. 28. Orth. albus^-ZVees ex Steud. 1. c. 44 ; Miq. I c. 



Panicum Burmanni, JSetz. Obs. iiT~TO ; Roxb. Fl. Ind. i. 298 ; Trin. Sp. 

 "H rant. Ic. i. 193; Baker Fl. Maurit. 438. P. album & africanum, Poir. 



Encycl. Suppl. iv. 274, 275. P. bromoides, Lcvnifc. Til. i. 170,'Encycl. iv. 



742. P. hirtellum, Burin. Fl'.ind.Z^i. 13, f. 1 (non Linn); Steud. 



1. c. 44,'HPrjaponicum, Steud. in Flora xxix. (1846) 18. P. TnnUiW.tnn. 



Hochst PI. Schimp. Abyss, n. 1469; A Rich. Tent. Fl. Abyss, ii. 377. 



Echinochloa hirtella, Schult. Mant. ii. 269. Oplismenus, Wall. Cat. 8677, 



8678. 



PLAINS or INDIA, from Rohilkund to Bengal, Silhet and Chittagong, ascending 

 the Himalaya in Sikkim to 5000 ft. BEHAB and CBNTEAL INDIA, CEYLON, 

 Jaffna (Herb. Rottl.); Ferguson. DISTBIB. Malay Islds., China, Japan, Afr. trop. 



Diffusely branched and rooting below, stems often almost filiform. Leaves 

 always small, sheaths glabrous or hairy. Panicle 1-4 in., inclined or nodding; 

 spikes rarely 1 in., very pale, rachis glabrous or pubescent. Spikelets -^-^ in. 

 (excl. awns) ; gl. I ciliate, 1-3-nerved, awn | in. or less ; II 3-5-nerved, awned ; III 

 6-9-nerved, shortly awned, palea 0. Usually very distinct from 0. compositus, but 

 I have found specimens growing in the Jheels, with spikes nearly two inches long 

 and stouter awns, forming a transition to that plant. Wall. Cat. 8678 is a very 

 small Silhet form, with ovate leaves - in. Clarke found it also in Silhet. 0. 

 africanus is the earliest name for the species under Oplismenus, but Eurmannii is. of 

 universal adoption, and is the earliest specific name ; both were given by Beauvois, 

 0. africanus in 1807, 0. Eurmannii in 1812. 



DOUBTFUL SPECIES. 



O ? DUBIUS, Kunth Revis. Gram. i. 44; Enum. PI. i. 143. 



12. ARUNDINELIiA, Raddi. 



Annual or perennial erect grasses. Leaves narrow. Spikelets panicled, 

 not jointed on the pedicels, 1-2-fld. Glumes 4, membranous or subcoriaceous, 

 I ovate acute or acuminate, ratber shorter than 11,3 or 5-nerved ; II 

 lanceolate or ovate-lanceolate, acuminate or subaristate, 5-rarely 7- nerved; 



