Jwicellus.} CLXXII. CYPBRACE-ffl. (C. B. Clarke.) 597 



linear-lanceolate red scabrous crest. Style slender, hardly as long as nut ; branches 

 shortly exsert. Nut piano- or concavo-convex, top obtuse. 



Var. j3. junciformis ; rigid, spikelets 1-6 rigid shining chestnut or black. C. 

 distachyos, All. Fl. Pedem. Auctuar. 48, t. 2, fig. 5; Botes. FL Orient, v. 367. C. 

 junciformis, Desfont. Fl. Atlant. i. 42, t. 7, fig. 1 ; Soiss. I.e. . C. Ifevigatus, var. 

 junciformis, C. B. Clarke in Journ. Linn. Soc. xxi. 79. / 



Peshawur; Stewart. Sind ; Stocks. DISTEIB. Oriental. 



4. CYPERUS, Linn. 



Stem erect, simple, leafy only near base. Inflorescence umbellate or 

 capitate. Spikelets linear or oblong, compressed; rhacheola persistent. 

 Glumes distichous, 2 lowest empty, 4-oo succeeding bisexual seriatim de- 

 ciduous, uppermost 1-3 sterile or empty. Stamens 3-2, rarely 1 ; anther 

 linear or oblong, sometimes crested. Nut triquetrous, trigonous or piano- . 

 convex, plane face flat against rhacheola; style-base continuous with nut, 

 ' not tumid, branches 3 linear (occasionally 2 in upper fl. of C. stoloniferus, 

 and in C. CepJialotes). Species 300, all warm and temperate regions. 



Subgenus I. ANOSPOEUM (Genus), Nees in Linnsea, ix. 287. Style long, 

 undivided or obscurely 3-2-todthed. Hydroschoenus, Moritzi Verz. Zoll. 

 Pfl. 95. Trentepohlia, Boeck. in Sot. Zeit. xvi. 249. (Sp. 1). 



1. C. Cephalotes, Vahl Enum. ii. 311 ; leaves and bracts long, inn. 

 of one compound dense head, nut stipitate below corky. KuntTi Enum. ii. 

 48 ; Miq. Fl. Ind. BoJ. iii. 271 ; G. B. Clarke in Journ. Linn. Soc. xxi. 25, 

 34, t. 1, figs. 1-6. C. monocephalus, Ro$b. Fl. Ind. i. 188. C. Hookerianus, 

 Thw. Enum. 342 (not of Am.}. C. leudocephalus, Wight ms. (not of Retz). 

 C. natans, Sam. ms. C. dubius, Rottler in Neue Sclir. G-esell. JFreunde 

 Berlin, iv. 193, in Obs. Anosporum monocephalum, Nees in lAnnsea, ix. 

 287, and in Wight Contrib. 92 ; Griff. Notul. iii. 103 ; Boeck. in Linnsea, 

 xxxvi. 411. A. Cephalotes, Kurz in Journ. As. Soc. Seng. xlv. pt. 2, p. 159. 

 Hydroschoenus kyllingioides, Zoll. & Mor. ms. ; Moritzi Verz. Zoll. Pfl. 

 95; Miq. I. c. 296. Trentepohlia bifoliata. Boeck. in Sot. Zeit. xvi. 249. 

 Ungeria monocephala, Nees ms. Kyllinga, Wall. Cat. 3441 (mainly}. 

 Rheede Hort. Mai. xii. t. 53. 



From BENGAL to MADRAS and BURMA. DISTRIB. China, Malaya, Austral. 



Glabrous, floating in tanks ; stolons slender. Stems 4-16 in. Leaves 2-5, as 

 long as f stem, i in. broad. Bracts 3-5 up to 4-8 in., leaf-like. Heads - f in. 

 diam. Spikelets 10-70, - by i in., compressed, rigid, often bent, 10-36-fld. ; 

 rhachilla stout, persistent, angular, hardly winged. Glumes closely packed, boat- 

 shaped, green, more or less marked with red or chestnut. Stamens 3-2 ; filaments 

 broadly ligulate ; anthers large, linear-oblong, muticous. Nut % length of glume, 

 ovoid, unequally trigonous (i. e. somewhat plano-convex) passing gradually into the 

 linear style f length of nut. In the Cyperacece which float in tanks that are never 

 dry, a corky thickening of the cells especially towards the lower angles of the nut 

 enables them to float, and hence vegetate among the rotting surface vegetation of the 

 tank. 



Subgenus II. PYCNOSTACHYS. Inflorescence umbellate throughout or 

 capitate ; spikelets digitate or clustered, not spicate. Style-lranches linear, 

 rarely linear- lanceolate. (Sp. 2-26.) 



Sect. 1. Natantes. Style-branches linear-lanceolate. Nut corky below. 

 Tank floaters. (Sp. 2.) 



