692 JOURNAL, BOMBAY NATURAL HlSr. SOCIETY, Vol. XXV. 



Apparently rare, the only authentic specimens being from nullahs and 

 rivulets in open places on the crest of the Southern Ghats. (All warm 

 regions). 



Probably C. Jlavidus is only a smaller annual form of this plant. 



22, C. leuCOCephalUS, J^e.tz. Rhizome short woodj'. Stems 

 numerous 6-12 inches, each with a solitaiy globose head of small 

 white spikelets. Bracts spreading and deflexed. Nut oblong- 

 ellipsoid, apiculate, black, i-ough. Habit of a Kyllinga. 



In open spaces in forests in the heavy rainfall belt on the crest of the 

 Southern Ghats. Flowers only in the early monsoon and common at that 

 time in the habitat given. (Tropics generally, presumably only in the 

 wetter regions). 



2o, C. arenarius, Tleh. Rhizome wiry, far-creeping in sand. 

 Stems distant on the rhizome, Aviry, 6-10 inches. Spikelets short, 

 broad, often almost amorphous, dirty straw-coloured, in solitary 

 globose heads. Nut obovoid, dark. 



On sand either on sea-shores or inland (in North Gujarat and Sind), 

 not uncommon. (Perso-Arabian and Indian). 



24. C. niveus, Betz. Rhizome woody. Stems approximate, 

 6-10 inches, Spikelets large, many-flowered, white. Grlumes 

 shortly mucronate at or below the apex, multi-striate. Nut 

 obo\^oid triquetrous, ultimately dark. 



On dry hills and banks, Sind and North Gujarat. (From Afghanistan 

 to China occasionally spreading southwards in drier India). 



25. C. COnglomeratUS, Fiotth. Rhizome woody, roots often 

 wooll3^ Stems 6-20 inches. Spikelets few-flowered, softlj'- pin- 

 kish grey, in sessile and shortlj^ umbellate heads. Glumes shortl}' 

 mucronate. Nut unec|ually trigonous, ultimately dark. 



Sind and North Gujarat in sand. (Westward to the Mediterranean). 



(h) Var. pachyrhizUS, Trimen. (Sp. Nees) A maritime form, 

 Avith very thick crowded stem -bases, clothed with brightlj^-coloured 

 sheaths, and heads up to 2 inches across bearing more numerous 

 spikelets. 



Coast of Kathiawar and the North Konkan. (Also Ceylon and the 

 Laccadive Is.) 



LC. effusus, ^t'otth. Like the last sp. but with many-flowered 

 spikelets with densely- crowded glumes. 



Sind, Pinwill {Rr F. B. I.). This should occur in Sind.] 



26. C. atkinsoni, ^'larli-e. Like C. confilomeroius, but roots not 

 woolly and spikelets pale-brown, rather many-flowered. 



Karachi— Stocks {Ex. F, B. I,) (Afghan.) 



Section II — Sjnkelcts sjnA-atc <»• racemosf not dif/itate. 

 A. — Small annual with sr/tmrrnse f/lumfs. 



