140 
CLXII. CYPERACE^. * [Pycreus, 
and roadsides over all warm countries. Common over the whole 
Peninsula, Singapore, Selangor, Pahang, Kelantan, Penang. 
var b. occurs with the type form, but is scarcer. 
(3) P. pimcticulatus Nees, Linncea, ix. 283; Clarke in Hook. 
fiL F.BJ. vi. 593; Ridl. Mat. hi. 61. Cyperus pimcticulatus 
Vahl. Enum. ii. 348. 
Culm triangular, over i ft, tall. Leaves about as long. Umbel 
simple or compound, 4 in. long. Spikelets -5 in. long, red, spicate. 
Glumes dark red, blunt, margin scarious, ribbed. Nut broad 
ellipsoid truncate, half as long as the glume. Hah. River banks, 
scarce. Perak by the river at Teluk Anson (Ridley). Distrib. 
India and China. 
(4) P. nitens Nees, Linncea, ix. 283; Clarke in Hook. fil. F.BJ. 
vi. 591. Cyperus pumilus Lmn. Sp. PI. 69. C. nitens Vahl. 
Enum. ii. 331. 
A small tufted plant i to 6 in. tall. Leaves as long as culms 
or longer. Umbel simple with slender peduncles, *5 in. long, 
or reduced to a single head. Bracts long, Spikelets -25 in. long, 
linear-oblong, silvery. Glumes 10 to 20, ovate mucronate, closely 
imbricating, silvery, keel green, ribs on each side, 2. Stamen i 
(rarely 2). Nut obovoid, compressed. Hab. Sandy spots, local 
but often abundant. Singapore, Macpherson Road; Changi. 
Malacca, Ayer Panas (Cantley). Perak, Telok Pinang, Ipoh. 
Penang, Dato Kramat (Curtis). Distrib. Tropical Asia. Native 
name: Rumput Taman. 
3 . CYPERUS, Linn. 
Culms erect, leafy at base only. Inflorescence umbelled, simple 
or compound or capitate. Rachilla of spikelet persistent after 
fall of glumes. Glumes distichous, the 2 lowest and one or two 
uppermost empty, the rest bisexual. Stamens 2 or 3, rarely i. 
Style continuous with nut, 3-branched. Nut triquetrous. Species 
300, whole world. 
Nut with corky edges; plant large 
Nut without corky edges. 
Dwarf annuals; glumes mucronate. 
Glumes usually dark red, nut sides parallel 
Glumes pale or brown ; not obovoid 
Small or middle-sized plants with very numerous 
short spikelets; leaves narrow. 
Stems acutely triquetrous weak; umbels 
spreading ...... 
Stems stiff; umbels dense .... 
Plant flaccid; spikelets fuscous in dense globose 
heads ...... 
Tall woodland plants, leaves and bracts broad; 
umbels compound; spikelets small, green. 
Spikelets flat ...... 
Spikelets turgid ...... 
(i) C. platystylis 
(2) C. castaneus . 
( 3 ) C. uncinatus 
( 4 } C. haspan 
( 5 ) C. pulcherrimus 
(6) C. difformis 
(7) C. diffusus 
(8) C. bancanus 
