210 OLXXIII. GRAMINEJJ. (J. D. Hooker.) \_Andropogon. 



KHASIA HILLS, Griffith, Clarke. CEYLON ; Badulla district, alt. 3000 ft., 

 Thwaites. DISTRIB. Trop. Asia, Afr., and Austral. 



Stems 3-4 ft., erect, leafy, subsimple or branching from the base, nodes glabrous. 

 Leaves 2-3 ft. by -^-^ in., linear, setaceously acuminate, scaberulous or smooth, 

 margins scabrid ; sheath terete, smooth, glabrous or mouth hairy j ligule short, mem- 

 branous. Panicle. 1-2 ft., narrow, compound, branches slender, nodes glabrous or 

 pubescent. Spathes 1-3 in., linear-lanceolate, acuminate, or tips setaceous, glabrous 

 ciliate or hairy. Peduncle much shorter than the spathe, bearded above with white 

 hairs. Spikes ^ f in., one subsessile with one pair of homogamous spikelets, the 

 other ^Q-| in. long witb two (rarely 0) horaogamous pairs ; heterogamous spikelets 

 1-3 pairs ; joints and pedicels very short, linear, ciliate or villous, tips very oblique. 

 Gl. I of sessile spikelets \-% in.; callus acute, bearded; gl. I membranous, truncate, 

 5-7-nerved, glabrous or villous, dorsally slightly channelled or not ; II oblong, 

 obtuse, keel glabrous or ciliate, 3-nerved; III linear-oblong, obtuse, hyaline, ciliate ; 

 IV shorter, 2-toothed, glabrous; awn 2-2^ in., column hispid with rufous hairs. 

 Pedicelled spikelets linear-lanceolate, gl. I acute, 7-9-nerved, keels setulose ; II 

 oblong, keeled; III and IY hyaline or 0. Homogamous spikelets not awned. 

 Hackel has 4 varieties under A.filipendulus, depending chiefly on the relative length 

 of the spathe and peduncle, and the number 1 or 2 of the heterogamous spikelets. 

 Of these 7. Thwaitesii is the Ceylon plant, with one pair of heterogamous and two of 

 homogamous on the stipitate spike. A. finitimus has normally 2-3 pairs of heteroga- 

 mous spikelets on each spike. These and two other African species, A. Earteri, 

 Hack., and A. famlliaris, Steud., are very closely allied, and regarded by Hackel 

 as probably subspecies of filipendulus. 



DOUBTFUL AND EXCLUDED SPECIES OP . . 



A. CITEATUS, DC. Cat. Hort. Monsp. 78, name only. May be either A. Nardus 

 or A. Schcenanthus, ex Hack. Monogr. Androp. 608. 



A. CYMBACHNE, Hack. Monogr. Androp. 450. Cymbachne ciliaris, Betz. Obs. vi. 

 36. Eottboellia Cymbachne, Willd. Sp. PL i. 465. ? Arthrostachys gracilis, Desv. 

 Opusc. 74, t. 6, f. 2. Bengal, Kosnig. An obscure plant, described by Hackel from 

 an incomplete specimen in the Copenhagen Herbarium, aud referred to the section 



A. CYMBAEIUS, Linn. Mant. ii. 303; Hack. I. c. 629. An African plant, stated 

 by Linngeus to have been found in India by Kcenig. 



A. DACTYLOIDES, Steud. ex Duthie Grass. N. W. Ind. 19. ? Lepeocercis digitata, 

 Nees. Doab, and banks of the Jumna, Eoyle. A. dactyloides, Steud., is Trachy- 

 pogon polymorphus, Hack., not an Indian plant, and Lepeocercis digitata, Nees ex 

 Koyle, is a name only, not taken up by Hackel. v 



A. DEPAUPERATUS, Kunth Eevis. Gram. i. 166, Enum. PI. i. 509 ; Hack. I. c. 

 565. Pollinia depauperata, Spreng. Pugill. ii. 11, Syst. Veg. i. 289. Bengal. An 

 indeterminable species of subgen. Chrysopogon. 



A. DIVERSIFLORUS, Steud. in Zoll. Syst. Verz. 58, is Polytrias prcemorsa,. Hack. 

 (Androp. 189), a Javanese plant not hitherto found in British India. 



A. FLABELLIPORMIS, Roscb. ex Spreng. Pugill. ii. 9, Syst. Veg. i. 283 ; KuntTi I. c. 

 509 ; Hack. I. c. 651. Bengal. Is indeterminable. 



A. PULVUS, Spreng. Pugill. ii. 8, Syst. I. c. 287 ; Kunth I. c. 503 j Hack. I. c. 565. 

 Bengal. Is undeterminable. 



54. ANTKXSTXRXA, Linn. 

 THEMEDA, Forsk. 



Tall, annual or perennial grasses. Leaves long, narrow. Spikes many, 

 short, crowded in spathaceous panicled fascicles, each in a proper spathe, 

 very shortly peduncled, inarticulate at the base. Spikelets 6-11 ; 4 lowest 



