OLXXiii. GRAMiNBJi. (J. D. Hooker.) 103 



30. DinXERZA, Br-. 



Slender annual or perennial grasses. Leaves narrow. Spikelets 1-Sd., 

 unilateral on a single terminal spike or several raoemed spikes, sessile or 

 pedicelled, raohis inarticulate. Olumes 4; I linear, rigid ; II broader com- 

 pressed; III smaller, hyaline, empty; IV hyaline, bisexual, entire or 

 2-lobed, keeled, 1-nerved, usually awned ; awn terminal or in the sinus, 

 capillary, twisted at or below the middle. Lodicules minute or 0. Stamens 

 2, filaments short ; anthers small. Styles distinct, stigmas short. Grain 

 linear, laterally compressed, free. — Species 12 or 14, tropical Asiatic and 

 Australian ; — all want revision with more copious material. 



* Spike solitary ; spikelets conniving ; gl. I erect, II not appressed to 

 the rachis of the spike. 



1. D. pusilla, Thw. JEnwm. PI. Zeyl. 369 ; stem filiform, leaves short, 

 rachis very slender compressed-trigonous, spikelets ^-^ in. long sessile or 

 pedicelled, gl. II acuminate awned. Sack. Monogr. Androp. 78 ; H'im. Oat. 

 Ceyl. PI. 107. 



The Deooan Peninsula and Cetion (CP. 957.) 



Very variable, 6-18 in. high. — Amongst tlie many forms the following appear 

 the most distinct. I cannot satisfactorily identify them with Hadcel's descriptioas. 



J3. jpusilla, proper ; stems 6-8 in. filiform, rachis of spike filiform trigonoui 

 smooth or scaberulons on the angles, spikelets pedicelled, pedicel usually naked below 

 villous upwards. D. pusilla, Thw. I.e. ?Hack. Monog. Androp. 78. Ceylon j at 

 Kokotodua, QariMer (OF. 957 in part). — This and the following I have described 

 from Thwaites' type specimens. 



Var. pallida, Thw. mss. j stem as in D. ipusilla proper, spikelets all sessile, or 

 the lowest on the spike pedicelled, awn of -gl. I shorter. P.D. Thwaitesii, Hack. 

 1. c. — Ceylon at Damboul, Thwaites (OP. 3935). 



Var. elatior ; stem 12 in., stouter, somewhat branched, spike longer, rachis as 

 broad as the shortly pedicelled spikelets keeled down the centre margins scaberulous, 

 awn of gl. I sometimes as long as the gl. — Ceylon ; at Trincomalee ; Olenie (CP. 

 957). 



Var. L^wsoni, stem short leafy, spike inclined, rachis broader than the sessile 

 villous spikelets, margins ciliate, glume II shortly awned. — Malabar ; Wynaad, 

 Lawson. 



2. 3>. Kurzii, stem 10-18 in. erect, rachis of spike rather broader 

 than the sessile spikelets strongly ciliate, gl. II acute not awned, more 

 or less ciliate. 



BuEMA, Eurz (u. 2741) ; Mergui, Griffith. 



Mnch stouter than any form of D. pusilla, which the spike closely resembles ; 

 but the spikes are longer, |— 2 in. ; spikelets -f^ in. long. — The spikes are some- 

 times inclined or recurved as in the species with several on the peduncle, hence 

 two spikes may occur. Kurz's specimens are very slender, 12-18 in. long ; 

 Grif&ths' solitary one is in a very youug state, with broader leaves sheathing the 

 spike. 



** Spikes 2-3 ; erect spreading or involute ; gl. I erect or spreading ; 

 II usually closely appressed to the raohis. 



+ Rachis capillary. 



3. D. Kohenackeri, Sochst. ex Miq. in Verh. Ned. Inst. III. iv. 

 (1851) 35, stem capillary, spikes very slender, rachis filiform trigonous, 

 spikelets distant narrow pedicelled, gl. II acuminate dorsally ciliate. Hack. 

 Mqnog. Androp. 79 ; Lisboa in Journ. Bomb. Nat. Hist. Soc. vi. (1891), 189. 



