411 Jour., Bom. Nat. Hist. Soc, Vol. XXXII, No. 3. [Jan. 15, 1928. 



back or complicate and more or less keeled upwards, upper boat-shaped, 

 more or less keeled. Floral glumes hyaline, lower 2-nerved, upper linear, 

 entire or 2-dentate with a usually perfect awn from the sinus. Pale or small, 

 hyaline, nerveless. Lodicules 2, small, glabrous. Stamens 3. Stigmas 

 exserted laterally low down. Grain linear, laterally compressed ; embryo half 

 the length of the grain ; scutellum linear-obiong. Pedicelled spikelet dorsally 

 compressed, awnless or aristulate. 



Species about 18 in the hot parts of the Old World, only a few entering the 

 temperate zone. One in Florida and Cuba. 



Cooke (ii, 934-986) describes 4 species of Andropogon belonging to the 

 section Chrysopogon : A. aciculatus, Retz., A. lancearius, Hook. L, A. monti- 

 cola, Schult., and A. Aucheri, Boiss. 



To these we add 4 species not noted from the Presidency before : Chrysopogon 

 Wightianus , Ness, Ch. aspsr, Heyne, Ch. polyphyllus, Blatter and McCann, and 

 Ch. Gryllus, Trim 



A. Pedicels of the upper spikelets half as long as 



the sessile spikelets or longer 

 I. Pedicels of upper spikelets glabrous or 

 nearly so 



1. Stems erect. Leaves 15-45 cm. long ... 1. C. Gryllus. 



2. Stems creeping below. Leaves 2-13 cm. 



long ... ... ... ... 2. C. aciculatus. 



II. Pedicels of upper spikelets villous with 

 rusty rarely pale hairs 



1. Lower involucral glume of pedicelled 



spikelets long-awned, upper not or very 



shortly awned 

 (a) Callus long villous all round 

 (6) Callus glabrous in front ... 



2. Involucral glumes of pedicelled spikelets 



bolh awned 



B. Pelicel of upper spikelets not half as long 



a> tiie sessile spikelets 

 I. Lower sheaths compressed 

 II. Lower sheaths terete 



1. Leaves, peduncle and branches of panicle 



glabrous 



2. Leaves, peduncle and branches of panicle 



not glabrous 



1. Chrysopogon Gryllus, Trin. Fund. Agrost. 188 ; Nees Gen. Fl. Germ. Mono- 

 cot, i, t. 93 ; Beath. Fl. Austral, vii, 537. — Andropogon Gryllus, Linn. Cent. PI. 

 ii, 33 ; Hack. Monogr. Androp. 550 ; Host. Gram. Austr. ii, 1, t. 1 ; Sibth. Fl. 

 Grsec. i. t. 67 ; Duthie Grass. N. W. Iud. 22, Fodd. Grass. N. Ind. 40 ; Hook, 

 f. in F. B. I. vii, 187 ; Collett Fl. Siml. 602, fig. 191.— ^4. echinulatus, glabra- 

 tus et Royleanus, Steud, Svn. Gram. 395, 397. --Chrysopogon glabratus, Trin. 

 in Mem. Acad. Petersb. ser. 6, ii (1833), 318.— Rhaphis Gryllus, Desv. Opusc. 

 69. — R. echinulala, Nees in Royle 111. Bot. Himal. 417. — Pollinia Gryllus, 

 Spreng. Pngill. ii, 10 ; Reichb. lc. Fl. Germ. t. Si.—Apluda Gryllus, Presl. 

 Cyp. & Gram. Sic. 55. — Holcus gryllus et pallidus, Br. Prodr. 199. 



Description : Stems simple, forming dense hard tufts, erect, 15 cm. to 1'5 

 m. high ; nodes smooth. Leaves 15-45 by 4-8 mm., linear, acute, glabrous or 

 hirsute, margins serrulate ; sheath keeled above, glabrous or pubescent. 

 Panicle large. 12-20 cm., rhachis angular, scabrid, axils bearded, branches long, 

 5-10 cm., capillary, spreading, simple or branched, usually very many in a 

 whorl and bearing 2-4 spikes, tips obliquely truncate and densely bearded. 

 Sessile spikelets 5-8 mm., callus straight, acute. Lower involucral glume 

 coriaceous, 2-toothed, dorsally rounded with 2 muricate or mamillate keels or 

 channels, shining, smooth or scaberulous, margins broadly involute, upper 

 chartaceous, hyaline, lanceolate, mucronate or aristulate, awn equalling the 

 spikelet or shorter, keel and sides bristly above the middle. Lower floral glume 

 linear-oblong, obtuse, nerveless, upper linear, minutely 2-toothed, awn minute 

 or 12-35 mm. long Pale small, oblong, glabrous. Pedicelled spikelets rather 

 longer than the sessile, teiete, lanceolate, acuminate ; pedicels glabrous or 

 ciliolate. Lower involucral glume acuminate or aristulate, 5-9-nerved keels 



[4] 



3. 



4. 



C asper. 



C. lancearius. 



5. 



C. Wightianus. 



6. 



C. montanus. 



7. 



C. polyphyllus. 



8. 



C. Aucheri. 



