KylUnga.] clxii. cyperace^. ^39 
Nut oblong, black. Hah. Damp grassy spots, rare. Singapore 
near Tanglin; Thomson Road (Ridley). Perak, Gunong Hijau 
(Burkill). Distrib. Africa, India and Java. 
2 . PYCREUS, Beauv. 
Stems erect, leafy at base only. Inflorescence of oblong or 
linear flattened spikes, umbellate or capitate; racheola persistent 
Glumes distichous, 2 lowest empty, upper ones bisexual, tenninal 
one or two empty. Stamens i to 3. Style 2-branched. Nut laterally 
compressed. Only differs from Cyperus in the 2-branched style and 
flattened nut. Species about 50, warm and temperate regions. 
Tall plants. 
Leaves distant on stem; glumes ovate, red or 
pale 
Leaves at base only. 
Cxlumes yellow or brown; spikelets narrow 
Glumes broad, red, oblong .... 
Small annual tufted plant. 
Glumes ovate mucronate, silvery 
(1) P. sanguinolentus 
(2) P. polystachyus 
(3) P. puncticulatus 
(4) P. nitens 
(1) P. sanguinolentus Nm, LinncBa, ix. 283; Clarke in Hook, 
fil. F.B.I. vi. 590; Ridl. Mat. iii. 60. Cyperus sanguinolentus 
Vahl. Enum. ii. 351. C. eragrostis Vahl. Eniim. ii. 322. C. cruentus 
Roxb. FI. I mi. i. 196 (not of Rottboell). 
Rhizome creeping. Culm 4 to 24 in. tall. Leaves distant on 
the stem in the lower half, sheaths 3 in. long or less, blade 6 to 9 in. 
long. Umbel simple, of 5 branches, peduncles 2 in. long and a 
central sessile spikelet, occasionally reduced to a head. Spikelets 
oblong or linear, brown or dark red, -25 to -5 in. long, nearly 
•12 in. wide. Glumes ovate obtuse keeled, loosely imbricate, 
• 3-ner\^ed. Nut half as long, dark brown or black, obovoid, bicon¬ 
vex, puncticulate. Hah. Rather rare, in rice-fields and damp open 
spots. Pahang, Kwala Tembeling. Negri Sembilan, at Kwala 
Pedas. Penang, Waterfall (Ridley). Distrih. Tropical Asia and 
U S ^ X* ^ 11 
(2) P. polystachyus Beam. FI. D'Oioar ii. 48, i. 86, fig. 2; 
Clarke in Hook. fil. F.B.I. vi. 592. Cyperus polystachyus Br. 
Prodr. 214; Ridl. Mat. iii. 60. 
A tufted plant 12 to 30 in. tall. Leaves longer or shorter 
than culm. Umbel simple with 4 or 5 branches 2 in. long or con¬ 
tracted into a head. Spikelets crowded, erect, narrow, linear, 
•25 to -5 in. long. Glumes numerous, yellow or brown, lanceolate 
acute, closely imbricating. Nut oblong truncate, black, half as 
long as the glume. 
var. b. laxiflora Benth. FI. Austral, vii. 261. Cyperus panicii- 
latus Rottb. Descr. and Ic. 40. C. plenus Kmith. Enum. ii. 12. 
Tall and weak branches of umbel longer and narrower, widely 
spreading and redder in colour. Hab. Waste ground, pastures 
