600 CLXXII. CYPERACE^:. (C. B. Clarke.) [Cyperus^ 



8. C. silletensis, Nees in Wight Contrib. (1834) 79 ; middle-sized or 

 slender, stolons 0, umbel contracted or reduced to 1 head, spikes globose 

 dense, spikelets small linear many-fld., glumes ovate-oblong, nut oblong- 

 obovoid | | length of glume. Kunth Enum. ii. 33 ; BoecTc. in Linnsea, xxxv. 

 555 ; C. B. Clarke in Journ. Linn. Soc. xxi. 132. Cyperus, Wall. Cat. 

 3363 F, 3536 (partly). 



BENGAL, ASSAM, SIKKIM, and BUKMA. 



Stems 4-12 in., rather slender at top, flowering the first year, but often producing 

 short lateral shoots from the base of stem. Spikes pale brown. Glumes at top sub- 

 triangular. Otherwise resembling C. difformis. Seldom collected, but not rare. 



9. C. pulcherrimus, Willd. ex Kunth Enum. ii. 35; middle-sized, 

 stolons 0, umbel dense usually compound with innumerable spikes of 5-10 

 very small linear spikelets, glumes ovate-oblong, their oblong tip inflexed 

 towards rhachilla, nut broadly ellipsoid f length of glume. Miq. Fl. Ind. 

 Bat. iii. 267 ; BoecJc,. in Linnsea, xxxv. 573 ; C. B. Clarke in Journ. Linn. 

 Soc. xxi. 132 ; Trimen Cat. PI. Ceylon, 100. C. eumorphus, Steud. in Zoll. 

 Verz. Ind. Archip. ii. 63, and Syn. Cyp. 22; Miq. I.e. 268. C. silletensis, 

 Thw. Enum. 343. C. Haspan, Benth. Fl. Austral, vii. 270 (partly). 

 Cyperus, Wall. Cat. 3357. 



SIND, Pinwill. BENGAL, WallipJi. ASSAM, Griffith, &c. CEYLON, Thwaites. 

 PENANG, Curtis, n. 1954. DISTEIB. Java, Borneo. 



Very near C. silletensis ; dried examples are easily distinguished by the crisped 

 incurved top of glume. Spikelets very like those of C. flavidus, which is a slender 

 . species. 



10. C. Haspan, Linn. Sp. PI. 66 (partly') ; middle-sized or small, 

 pale or red not yellow, rhizome long-creeping but plant often flowering in 

 first year, spikelets 2-6-digitate small linear, stamens 3-2, nut small ovoid 

 or obovoid ^| length of obtuse glume. Roxb. Fl. Ind. i. 210 ; Nees in 

 Wight Contrib. 80 (partly) ; Kunth Enum. ii. 34 ; Dalz. & Gibs. Bomb. Fl. 

 282 ; Thw. JEnum. 343 ; BoecJc. in Linnsea, xxxv. 574, var. a partly, and 

 var. /3 ; C. B. Clarke in Journ. Linn. Soc. xx. 287, and xxi. 119. C. grami- 

 nif olius, Poir. in Lam. Encyc. vii. 267 ; Kunth I. c. 98. C. pes-avium, 

 Bertol. Misc. Bot. viii. 30, t. 3, fig. 1. Cyperus gracilis, Serb. Heyne, 

 Wall. Cat. 3369, D, E, F, 3372. Scirpus, Rottb. Descr. et Ic. 58, 1. 17, fig. 3 

 (excl. Syn. Linn.). 



Throughout INDIA; abundant, especially in dibbled rice-fields. DISTEIB. All 

 warm regions. 



Glabrous. Rhizome in typical form creeping, 6 in. and upwards, covered by 

 ' ovate triangular scales and with distant solitary stems ; but stems often eaBspitose 

 on a very short rhizome or with fibrous roots only. Stems 4-30 in., sometimes 

 stout, almost 3-winged at top, sometimes slender trigonous. Leaves short or longer 

 and overtopping the stem, or 0. Umbel small or large, compound or simple, thin 

 straggling with few spikes, or dense with innumerable spikes ; bracts short or long 

 and far overtopping umbel, (in Khasia examples) long, i in. broad, tip triangular- 

 lanceolate. Spikelets ^-f by ^ -^ in., 10-40-fld., varying much in development. 

 Glumes close-packed, ovate, obtuse, obscurely (or not) mucronate. Anthers linear- 

 oblong, often bristly at top. Nut trigonous, slightly compressed, minutely scabrid 

 or smooth, pale brown (sterile white) j style about as long as nut, branches linear 

 slightly exsert. This and many other species show that in Cyperacecs stoutness of 

 stem, length and breadth of leaves, development of umbel, length of bracts, are 

 often futile characters. 



11. C. flavidus, Betz. Obs. v. 13; slender, annual, ripe yellow or , 



