Schizachyrimn.l cLxiii, graminS:^. 211 
glume II keeled keel ciliate; glume III very thin; glume IV oblong 
truncate with a long yellowish-brown awn. Pedicelled spikelet 
lanceolate mucronate on a stout ciliate peduncle. Hab. Very local 
in sandy spots near the sea, fonning large tussocks. Changi in a 
sandy wood; Blakan Mati island; Gelang ‘(Ridley). Distrib. 
Africa, tropical Asia and America. 
23. CYMBOPOGON, Spreng. 
Perennial densely tufted grasses, forming tussocks, usually 
aromatic. Panicles tall, frequently compound and contracted. 
Spikelets in pairs, i sessile and i pedicelled; rachis articulate 
fragile, bearing many-jointed paired racemes, with a spathe at each 
pair of racemes. Fiorets 2, lower one an empty glume, upper one 
bisexual in sessile spikelet, male or neuter in the pedicelled one. 
Glumes I and II equal chartaceous keeled; glumes III and IV 
hyaline; glume IV bifid, a\raed. Grain oblong. Species 36, Old 
World tropics. 
(1) C. nardus Rendle. Andropogon Nardus Linn. The Citronella 
grass; Sereh Wangi cultivated largely for the oil since 1872. 
Perhaps a native of Ceylon. 
(2) C. citratus Stapf. Andropogon citratus, DC. Lemon-grass; 
Sereh Makan. Cultivated in all native gardens, being used in 
curry. Also cultivated in Singapore and elsewhere for its oil. 
Origin uncertain, but probably some of the Eastern Malay islands. 
It very rarely, if ever, flowers (see on these oil-grasses Stapf. Kew 
Bulletin igo6, p. 297). 
Cymbopogon sp. On Rawei island, Pulaii Adang group. I found 
what appeared to be a species of this genus in great abundance on 
banks over the sea. The inflorescence, however, was attacked by 
a fungus, Epichloc, and it was impossible to determine the species. 
The leaves were broad like those of Citronella grass, and the plant 
was faintly but distinctly scented. It was undoubtedly indigenous. 
24. THEMEDA, Forsk. 
Very tall or short perennial grasses, with long narrow leaves. 
Racemes many, in crowded fascicles enclosed in spathes. Spikelets 
6 to II, the lowest awnless, male or barren forming an involucre 
surrounding i or more sessile bisexual or female spikelets, usually 
awned, linear-oblong. Glume I lanceolate acuminate, coriaceous; 
glume II shorter or as long, keeled; glume III oblong; glume IV 
short, long-awned. No palea. Species 10, Old World tropics. 
Annual dwarf grass, spikes in fan-shaped nodding 
heads. (i) Th. arguens 
Perennial grass; culms ro ft. tall or more; panicle 
very large; involucral spikelets glabrous . . (2) Th. villosa 
Perennial grass; culms 3 ft. tall; panicle lax, smaller; 
involucral spikelets yellow, hairy . . • (3) Th, subserican 
