CXLVII. GRAMINE.E. 1035 



4. Chloris barbata, Siv. Fl. lad. Occ. v. 1 (1797) p. 200. Peren- 

 nial ; stems tufted, with strong root-fibres, rather stout, 2-3 ft. high, 

 geniculately ascending, branching upwards, leafy, quite smooth ; lower 

 iuternodes 2-3 in, long, as thick as a crow-quill, shining ; upper very 

 long, slender; nodes often bearing equitant tufts of leaves. Leaves 

 6-18 in. long, narrowly linear, flat or folded, finely acuminate ; sheaths 

 smooth, the lower open ; ligule a very narrow membrane. Spikes 5-20, 

 digitately arranged in a truncate fascicle, i-4 in. long, on a slender 

 peduncle, often purplish. Spikelets yL i^. long (excluding the awns), 

 green or purple, 3-avvned ; rhachilla produced, but not beyond the 

 fertile glume, bearing 2 small turgid obovate awned barren glumes 

 -^ in. long, the awns g--^ in. long. Invol. -glumes hyaline, lanceolate, 

 acute (not awned) ; lower Jg- in. long; upper ^ in. long; floral glume 

 of hermaphrodite floret -^ in. long, broadly elliptic, shortly apiculate, 

 with a slender awn g-^ in. long and with densely bearded margins 

 above the middle ; palea nearly as long as the glume, oblauceolate. 

 ri. B. I. V. 7, p. 292 ; Grab. Cat. p. 234 ; Dalz. & Gibs. p. 296 ; Lisboa, 

 in Journ. Bomb. Nat. v. 7 (1893) p. 367 ; Woodr. in Journ. Bomb. Nat 

 V. 13 (1901) p. 440; Prain, Beng. PI. p. 1227; AVatt, Diet. Econ. 

 Prod. V. 2, p. 269. — Flowers : Nov. Verk. Gonclvel. 



Throughout the Presidency. Deccan: Woodrow. Sind : Woodrow. — Distrib. 

 Throughout the plains of India ; Ceylon, Tropics generally. 



58. TRIPOGON, Eoth. 



Slender densely tufted grasses ; stems erect, leaiy below. Leaves 

 narrow, rigid, flat or convolute. Spikelets usually many-flowered (all 

 except 1-2 terminal perfect), 2-seriate and unilateral on a very slender 

 terminal spike, not articulate at the base ; rhachilla produced between 

 the glumes but not beyond them, slender, articulate at the base. 

 Glumes many ; invol.-glumes unequal, distantly superposed,, mem- 

 branous, 1-nerved ; lower invol.-glume usually lodged in a furrow of 

 the rhachis, toothed or lobed on one side ; upper invol.-glume entire 

 or notched below the mucronate or apiculate tip ; floral glumes ovate, 

 dorsally convex, 2-fid and awned in the cleft or 4-fid with the outer 

 lobes awned, the inner lobes membranous and rarely awned, awns all 

 straight ; callus short, bearded ; palea broad or narrow, complicate, 

 truncate, with ciliate keels. Lodicules 2, cuneate. Stamens 3 ; anthers 

 long, linear-oblong. Styles short, distant at the base ; stigmas short, 

 plumose. Grain narrow, free in the glumes. — Distrib. Tropical and 

 Subtropical Asia and Africa ; species about 12. 



Awn as long as its glume or longer; lateral lobes of floral 

 glume awned. 



Under 3 in. high ; leaves 1 in. long ; ligule membranous, 



Ovate 1. T. paiqjerculus. 



6-18 in. high; cauline leaves 6-8 in. long; ligule a 



ridge 2. T. capilladis. 



Awn shorter than its glume ; lateral lobes of floral glume not 

 awned. 



Leaves 12-24 in. long; spikelets 5-1 2-flowered ; lower 



invol.-glume j'^ in. long, lanceolate 3. T. Lisbnce. 



Leaves 2-8 in. long ; spikelets 10-20-flowered ; lower 

 invol.-glume g in. long with a projecting lobe at one 

 side 4. 7'. JacqucuoiUii. 



