142 CLXII. CYPERACEiE. \Cyperils. 
tracted to a head. Spikelets linear, *36 in. long, pale or dark red. 
Glumes strongly 3-nerved with a strong recurved point. Nut 
oblong-ovoid. Hab. Sandy places beneath coconut palms, etc. 
Not rare. Singapore, Macpherson Road. Negri Sembilan, Tampin, 
(Burkill). Penang, Dato Kramat (Curtis). Kedah, Yan. Tringganu 
(Yapp). Kelantan, Kota Bharii. Dislrib. Wann regions. 
This species is only distinguished from C. castatteus by the form of the nut. 
(4) C. haspan Linn. Sp. PL 66; Clarke in Hook. fil. F.B.I. 
vi. 600; Ridl. Mat. iii. 64. 
A weak plant with rhizomes 6 in. long or more and distant 
solitary stems, or sometimes shorter and crowded. Culms tri¬ 
quetrous, slender, flaccid, 4 to 30 in. long. Leaves often shorter. 
Bracts long, broad, leaf-like, tip triquetrous. Umbel usually large, 
compound, spreading, rays 4 in. long or less. Spikelets usually 
few, small, sometimes numerous, crowded, -12 to *75 in. long. 
Glumes usually few 10 to 40, ovate obtuse, hardly mucronate, 
reddish, keel green. Nut obovoid triquetrous, very small, white 
or pale brown. Hah. Very common in ditches and wet spots, 
very variable in size and development of umbel according to 
locality. Wdiole Peninsula from Singapore to Penang, in low 
country, up to 3000 ft. altitude on Kedah Peak. Distrib. All 
warm regions. Native names: Rumput Sumboh; Rumput Bilis 
jantan. 
(5) C. pulcherrimus Willd. in Kiinth. Eniim. ii. 35; Clarke 
in Hook. fil. F.B.I. vi. 600; Ridl. Mat. iii. 64. 
A tufted plant with numerous culms 14 to 18 in. tall, fairly 
stout. Leaves shorter. Umbels decompound, 6 to 8 in. across, 
dense, with very numerous spikelets clustered at the end of the 
rays. Spikelets -iz in. long or less, yellowish brown. Glumes 
ovate-oblong obtuse, tip incurved. Nut broadly elliptic. Hab. 
Damp spots and paddy fields, not rare. Pahang, Pekan. Selangor, 
Batu Caves. Penang, Pulau Betong (Curtis); Ayer Rajah Road 
(Nur). Perlis, Kanga. Distrib. India, Java and Borneo. 
(6) C. difformis Linn. Sp. PL 67; Clarke in Hook. fil. F.B.I. 
vi. 599. 
Annual 4 to 20 in. tall. Leaves flaccid. Culm triquetrous 
at top. Umbel contracted of 4 or 5 rays i to 2 in. long or less. 
Heads globose, *25 in, through, Spikelets oblong blunt, -i in. long or 
less. Glumes close packed, concave, quite blunt, truncate, greyish 
white. Nut broad ellipsoid, nearly as long as glume, triquetrous. 
Hab. Rare. Ricefields in Kelantan near Kota Bharu (Ridley). 
Distrib. Tropics of Old World. 
(7) C. diffusus Vahl Enum. ii. 321; Clarke in Hook. fil. F.B.I. 
vi. 603; Ridl. Mat. iii. 65. C. elegans Sw. Obs. Bot. 30. 
Culms solitary, 8 to 36 in. tall, stout, triquetrous. Leaves as 
tall or taller, -25 to ’5 in. wide. Umbel compound, 4 to 14 in. 
across, rays 6 or more. Bracts many, leafy, to *5 in. wide. Spike- 
