Ischcemum.~\ CLXXIII. GRAMINEJJ. (J. D. Hooker.) 131 



Stem 12-24 in., slender, flaccid, leafy, pale, internodes long, nodes glabrous or 

 hairy. Leaves 3-5 in., finely acuminate, flaccid, 3-5-nerved, glabrous or sparsely 

 hairy, margins smooth, costa slender, lower with a filiform petiole -lj in. long ; 

 sheaths long, upper often ventricose and open, margins and ligule ciliate. Spikes 

 1-2| in., more or less villous with white or grey hairs ; joints trigonous, clavate. 

 Sessile spikelets \-^ in., gl. I thin, green, dorsally villous, margins narrowly inflexed 

 chiefly below the middle ; II lanceolate, acuminate, dorsally rounded ; III lanceolate, 

 1-nerved, paleate ; IV glabrous or lobes ciliate, 3-nerved, awn |-- in. ; palea longer 

 than the gl. Pedicelled spikelets very shortly broadly pedicelled ; gl. I 7-9-nerved, 

 winged above on one side. I have not seen Huegel's specimens which alone Hackel 

 describes, and for which no habitat is given. The leaf-margins of the specimens I have 

 seen are scarcely " scaberrimse." Hackel has two vars. : a. genuinum, spikelets 

 glabrous, joints dorsally smooth; (3. dasyanthum, gl. I at least of upper spikelet 

 appressedly villous, joints scabrid with hairy margins and dorsal keel. 



Var. glabrescens ; spikes more slender, joints shortly villous, gl. I shining glabrous 

 transversely undulate below the middle, IV bicuspidate, awn sometimes inserted 

 half-way between the base and sinus, or bipartite and awn geniculately inserted at 

 the cleft. 



10. I. conjugratum? Roach. PL Ind. i. 321 ; annual, prostrate below, 

 leaves short base hastate or broadly deeply cordate, spikes 2 short villous, 

 joints very short ciliate, gl. I of sessile spikelet oblong obtuse flat 2-toothed 

 villous even or lower margins obscurely nodose, II lanceolate acuminate 

 puberulous, IV cleft to about the middle, awn dorsally inserted at or below 

 the cleft. Kunth Enum. PI. i. 513 ; Hack. Monogr. Androp. 205. Spodio- 

 pogon conjugatus, Voigt Sort. Suburb. Gale. 706. Andropogon cordati- 

 folius, Steud. Syn. Gram. 376. 



BENGAL; near Calcutta, Roxburgh. The CONCAN, Stocks. CEYLON (naturalized) 

 Trimen. 



Stem spreading from the root and creeping, then geniculately ascending, 12-18 in. 

 high, slender, stiff, purplish, repeatedly branching upwards. Leaves 1-1^ in., 

 acuminate, broadest at the base, rather rigid, striate, lower petioled ; sheath of the 

 upper ventricose and often open; ligule short, glabrous. Spikes 1-1^ in., sessile; 

 joints quadrately clavate, plano-convex. Spikelets % in., pale; gl. I more or less 

 villous from below or above the middle to nearly the top, margins narrowly inflexed 

 not winged, upper half often greener ; II strongly keeled, puberulous ; III paleate ; 

 IV awn slender about twice as long as the spikelet. Pedicelled spikelets subsessile, 

 almost awnless ; gl. I as in the sessile. I have seen only Concan specimens, they 

 agree with Roxburgh's character and figure, except in the nodes being hardly 

 villous. 



Pedicel of upper spikelets = f the length of the lower spikelet, or 

 longer. 



11. I. commutatum. Hack. Monogr. Androp. 209 ; slender, prostrate 

 below, leaves short cordate lower petioled, spikes 2, gl. I of sessile spikelet 

 oblong obtuse or acute 2-toothed flat dorsally undulate tip faintly winged 

 margins obscurely nodulose, II acuminate keeled, IV cleft to the middle, 

 awn inserted by a broad base between the ciliate lobes. Trim. Cat. Geyl. 

 PI 107. I. semisagittatum, Thw. Enum. PI. Zeyl. 365 (non Roxb.}. 



NILGHIRI HILLS ; Conoor, alt. 7000 ft., Clarke. CEYLON; Ambagamowa district, 

 Thivaites (C.P. n. 2625). 



Stem 6-12 in., branching upwards from a decumbent base, nodes glabrous. 

 Leaves 1-3 in., linear-lanceolate, acute, softly hairy, margins scabrid ; sheath smooth 

 or hairy and keeled above; ligule rounded. Spikes 1-1 i in. ; joints = about the 

 sessile spikelet, shortly ciliate. Sessile spikelets i-^ in., green or dark-colrd. ; callus 



K 2 



