158 OLXXIII, QRAMINB2E. (J. D. Hooker.) [Rottboellia. 



ceous, elliptic-lanceolate, ciliolate; III ovate-oblong, obtuse; IV hyaline, 3-nervedj 

 palea truncate, nerveless. Pedicelled spikelets reduced to a solitary gl. winged on 

 one side, rarely with a second ; pedicel adnate to the joint of the rachis. A solitary 

 specimen of a closely allied, I think, umlescribed, species from Rangoon, McLellari'i, 

 has caudate acuminate leaves, solitary spikes, sessile spikelets longer than the 

 joints, gl. I narrowly oblong, margins smooth. 



15. R. Helferi, Hook.f. \ perennial, spikes solitary fragile subsessile 

 in the sheaths, joints very short pyriform, sessile spikelets longer than the 

 joints, gl. I ovate obtuse narrowly winged above the middle, back and sides 

 smooth. 



TENASSERIM, Heifer. 



Stem 1-2 tt., slender, erect, from a nodose stock, sparingly branched above; 

 nodes faintly bearded. Leaves 1-2 ft. by \-\ in., erect, linear from a hardly 

 narrowed base, finely acuminate, hairy on both surfaces ; sheath glabrous, bearded at 

 the tip. Spikes 1-4 in., slender, erect; joints r ^ i u ., excavate on one side, base 

 shortly hairy. Spikelets % in. ; gl. I broadly ovate, narrowed suddenly above the 

 middle, smooth, glabrous, or slightly pubescent on the sides below, wings serrulate ; 



II ovate, acuminate, chartaceous, 1-nerved, keeled, faintly obliquely winged above, 



III broadly ovate, obtuse, hyaline, faintly 3-nerved, palea small 2-toothed ; IV 

 ovate, obtuse or subacute ; palea broad, truncate, 2-nerved. Pedicel of upper spikelet 

 longer than the joint, linear, flattened, strongly 2-nerved, ciliolate at the base ; 

 spikelet reduced to a minute ovate glume. 



B, Sessile spikelets geminate in all but the uppermost joints of the 

 spike. 



Sect. Y. MNESITHEA, Kunih (genus). 



16. R. perforata, Roxb. PL Corom. ii. 43, t. 182, Fl. Ind. i. 356 ; 

 leaves very narrow, spikelets glabrous, pedicelled spikelets reduced to a 

 minute gl. R. Isevis, Retz. Obs. iii. 11; Steud. Syn. Gram. 362. Ophinrus 

 pert'oratus, Trin. in Mem. Acad. Petersb. Ser. 6, ii. (1833) 246 ; Hack. 

 Monogr. Androp. 319. O. laevis, Benth. in Journ. Linn. Soc. xix. (1881) 69 ; 

 Trim. Cat. Ceyl. PI. 107; Duthie Grass. N.W. Ind. 17, Fodd. Grass. N. 

 Ind. 29; Lisboa in Bomb. Journ. Nat. Hist. vi. (1891) 193. Mnesithea- 

 laevis, Kunih Revis. Gram. i. 154, Enum. PI. i. 466, Suppl 375, t. 18, f. 3; 

 Thw. Enum. PI. Zeyl. 364; Wall. Cat. n. 8873; Wight Cat. n. 1722; 

 Aitchis. Cat. Pan jab. PI. 172. Hemarthria ? perforata, Kunfh I. c. 453, 

 Enum. i. 465. Diperium cylindricum, Desv. Opusc. 76, t. 6, f. 3. Thyri- 

 dostachyum laeve, Nees in Lindl. Introd. Nat. Syst. Ed. II. 379. ^Egilops 

 cuneata, Herb. Roxb. 



Throughout INDIA, from the INDUS to BDEMA and southward to CEYLON. 

 DISTRIB. Affghan., Java. 



Stem 2-4 ft., rather slender, simple or branched above ; nodes few. Leaves 

 6 30 , by ^ in., flat (conduplicate in vernation), linear from a narrow base, glabrous 

 or base hairy, upper acute, lower obtuse, margins scaberulous ; sheath terete ; ligule 

 very short. Spikes 4-8 in., shortly exserted, joints seuii-cylindric, excavate on 

 opposite sides with the pedicel of the imperfect spikelets between the opposite fertile 

 spikelets. Spikelets i-| in. ; gl. I oblique, smooth or pitted above the base. 



17. R. mergruensis, Hook.f. ; leaves $- in. broad, spikelets glabrous, 

 pedicelled spikelet minute imperfect. 



