78. Cymbopogon.] 139. GRAMINE^E. 



Sessile spkts. -13" long fitting between the joint and pedicel the hairs 

 of Avhich fringe its glume i on either side. Gl. i deeply channelled to 

 base betM'een its nearly glabrous minutely excurrent keels, margins 

 much inflexed, not at all winged ; ii rather shorter cymbiform mucro- 

 nate, keel scabrous ; iv very narrow^ 2 -fid with capillary segments 

 about one-fourth of its length, awn about -25" long only. 



Ramnagar Hills, Champaran ! Common. Fl. Oct. 



The deeply channelled glume i with the 2 keels approximate make this easily 

 recognizable from any form of C. nardm. It differs, however, in some other 

 respects almost as much from C. microfheca. Both have one spike of the pair 

 pedicelled and all pairs of spkts. similar, and the other spike sub-sessile with the 

 lowest sessile spkt. not differing much in appearance from the others, but lacking 

 gl. iv and with a very minute palea (or rudimentary gl. iv) and rudimentary ovary 

 (they are therefore in floral characters as near section Flentium of Andropogon as to 

 Cymbopogon). The joints, however, especially the lowest of typical microfheca, are 

 ■0-t--05" long and much swollen, so that they are nearly as broad, one edge (that 

 adjacent to the sess. spkt.) is villous, the other more rounded edge minutely 

 villous, the joints are deeply excavate above and 2-toothed on the margin. In 

 our variety the corresponding lowest joint (subtending the persistent imperfect 

 sessile spkt.) is only -03" long and uarrowlj^ trumpet-shaped, i. e. not at all swollen, 

 both edges are nearly equally villous. Both have the very rudimentary 2-lobed 

 glume iv (or palea) in the imperfect sessile spkt. and this is only about twice the 

 length of the lodicules. I have found no stamens but an imperfect ovary, so that 

 the lowest pair of spkts. is not homogamous, the adjacent pedicelled spkt. having 

 3 well -developed stamens. 



5. C. gidarba, comb. nov. f^yn. Andropogon Gidarba, Ham. 



Slender 2-3 ft. high Avith glabrous nodes. Leaves very narrow 

 •1--2" broad, puberulous or shortly hairy above, glaucous beneath, 

 ligule scarious appressed to the culm, -V long glabrous. Panicles 

 strict erect. Spatheoles •6-1-2" long convolute subcuspidate glabrous, 

 their peduncles compressed, peduncle of geminate spikes about 

 one-third to half as long as spatheole not or shortly exserted, tip 

 slightly toothed. Spikes unequal and with unequal bases, the one 

 "vvith the longer base heterogamous throughout, the more sessile one 

 with lowest sessile spikelet differing from the others and male. Joints 

 and pedicels rather stout, basal sometimes ver}^ stout, flattened and 

 concave sometimes even conduplicate and embracing the lowest 

 sessile spkt. on one side, often purple and hirtellous, tops toothed and 

 slightly ciliate. Sessile spkts. wedged in between the joints and pedi- 

 cels the hairs of which do not conceal its gl. i (cp. C. iwarancusa), 

 callus glabrous or nearly so. Gl. i -IS-- 14" long, deeply channelled 

 from one -third of its length above the base, the channel slightly 

 forked below, strongly 2-keeled with broadly inflexed margins, not 

 at all Avinged, oblong-lanceolate, keels scaberulous. scarcely excurrent, 

 not nerved betAveen. In most spkts. there is a deep pit in the callus 

 at the base of gl. i. 



Monghyr, Ham. {Wall. n. 8797} ! Gya, Molim ! Hazaribaah (Koderma Forest) ! 

 Fl., Fr. Oct. -Nov. Annual. 



79. THEMEDA, Forsk, 

 {Anthistin'd, L.). 



Tall annual or perennial grasses Avith narroAV leaves and short 

 ligules. Spikelets 3-morphic, in clusters Avith the 4 outermost forming 



1048 



