598 CLxxii. cypERACE^. (C. B. Clarke.) [Gyperus. 



2. C. platystylis, Br. Frodr. 214 ; leaves and bracts long, umbel 

 compound, spikes near together often very numerous. C. B. Clarke in 

 Joum. Linn. Soc. xxi. 27, 117, t. 1, figs. 7-9 {esecl iyn. G. eaducus). C. 

 pallidus, Heyne vns. ; Nees m Linnsea, ix. 284, and in Wight Gontrih. 79 ; 

 Kimth Unum. ii. 40 ; Thw. Envm. 343. C. canescens, Herb. Seyne, and 

 G. &u.ita3iB, Serb. Ham.; Wall. Gat. 3837, 3359 D {partly). Anosporum 

 pallidum, Boeck. in Linnxa, xxxvi. 412. 



Prom Bengal and BtrEMA to Ceyloit and Penang. — Disteie. Malaya, 

 Austral. 



Glabrous, floating in tanks. Stolons covered by ovate acute striate pale-brown 

 scales. Stems solitary, 6-42 in. Leaves often as long as stem, up to J-J in. broad, 

 coarse, cutting, nerves many, strong. Vnibel 1-10 in. diam. ; bracts 8-18 in., leaf- 

 like, somewhat corymbose. Spikelets 5-1300, 1-6-togetber digitate, i by | in., 

 20-40-fld., brown pale or reddish ; rhachilla persistent, scarcely winged. Glumes 

 very close-packed, boat-shaped, back with 3 green nerves. Stamens 3 ; filaments 

 ligulate ; anthers linear-oblong, crested with a small linear-lanceolate red mucro. 

 Nut ellipsoid, f length of glume, unequally trigonous, pale brown, corky cells of the 

 angles straw-colrd. ; style much shorter than nut, deciduous, branches as long as 

 style. 



Sect 2. Amdbiles. Slender annuals. Umbel very rarely -reduced to a 

 single head. Spikelets small. Glumes mucronate. (Sp. 3-5.) 



3. C. amabilis, Vahl lEnum. ii. 318 ; spikelets linear, golden-brown, 

 glumes truncate mucro short erect, stamen 1, nut obovoid f length of 

 glume. Kiinth JSnum. ii. 108 ; G. B. Clarice in Jowrn. lAnn. Soc. xx. 283, 

 and xxi. p. 85. C. aureus, H. B. K. Nov. Gen. ef Sp. i. 205 ; Kunth I. c. 21. 

 Boeck. in Linnsea, xxxv. 494. 



KuMAON, King. Moradabad, Thomson. Chota Nagpoke; up to 2000 ft., 

 C. JB. Olarlce. — Disteib. Warm regions. 



Glabrous. Stems csespitose, 2-S in. Leaves |-i length of stem, J^ in. broad, 

 weak. ZZmSeZ often very compound, rays 4 in. long; sometimes reduced to 1 head 

 (very variable in development) ; bracts up to 2 in., leaf-like. Spikelets 3-10 in a 

 spike, up to f by ^^-jL- in., 36-fld. (often much shorter). Glumes boat-shaped, back 

 3-5-nerTed, sides nerveless, mucro variable (often very short). Anthers small, oblong. 

 Nut fine brown ; style as long as nut, branches 3, linear. 



4. C. castaneus, Willd. Sp. PI. i. 278 ; small, umbel rarely com- 

 pound, spikelets linear chestnut or pale, glumes obtuse mucro conspicuous 

 recurved, stamens 2-1, nut exactly oblong 4-| length of glume (mucro 

 excluded). Boxb. Fl. Ind. i. 195 ; Nees in Wight Contrih. 79 ; Kunth Evmrn. 

 ii. 21 ; Thw. Enum. 343 ; Boeck. in Linnsea, xxxv. 496 {excl. Wall. 3376 B) ; 

 C. B. Clarke in Joum. Linn. Soc. xxi. 87. 0. squarrosus, Trimen Gat. 

 Ceylon Fl. 100. C. pnsillus. Herb. Wight ; • Wall. Cat. 3323. 



From East Nepal, X D. Hooher, to Cetlon, Thwaites, and Pebak, Kina. — 

 Disteib. Tonkin, Austral. 



Glabrous. Stems |-6 in. Leaves as long as stem, Jj in. broad, or (usually) 

 shorter. Umbel rays 0-2 in. rarely again divided, sometimes reduced to a single 

 head; bracts often as long as inflorescence. Spikelets 3-20 in a cluster, black- 

 chestnut in type form, i-J by i- in., 15-70-fld. Oltimes boat-shaped, back 3-nerved, 

 keel excurrent greenish -yellow. Anthers small, short-oblong. Nut red-black, sides 

 exactly parallel ; style much shorter than nut ; branches small, linear. 



5. C. cuspidatus, H. B. & K. Nov. Gen. et Sp. i. 204; glumes 

 strongly 3-nerved, mucro conspicuous recurved, nut oblong-obovoid J 



