862 CXLVI. CYPERACE^. 



(1868) p. 507. C. ruUcundus, Kiinth, Enum. v. 2 (1837) p. 49 (not of 

 Vahl) ; Boeck. in Linngea, v. 35 (1868) p. 507 ; C. B. Clarke, in Joiirn. 

 Linn. Soc. v. 21, p. 104,— Flowers : Sept. 



Eare. Dkccan : Poona, Woodrow,lAZ\ — Dibtrib. India (W. Peninsula); Teneriffe, 

 Africa. 



15. Cyperus uncinatus, Poir. Encyc. MetJiod. v. 7 (1806) p, 247. 

 A glabrous annual ; stems 3-6 in. long, tufted, slender. Leaves as long 

 as or shorter than the stem, filiform, flexuous. Umbel simple, con- 

 sisting of a central sessile head and few or many filiform spreading 

 unequal rays |-1 in. long, each terminated by a head of stellately 

 spreading spikelets ; bracts 3-5, filiform, much longer than the rays, the 

 longest sometimes reaching 3 in. long. Spikelets ^| by -1- in., 5-12 in 

 a cluster, compressed, 12-24-flowered, reddish-brown ; rhachilla scarcely 

 winged, slender. Glumes -^ in. long (not including the mucro, which 

 is nearly as long as the limb), oblong, obtuse, about -^ in. broad ; keel 

 3-nerved, produced into a long recurved mucro ; sides usually brown, 

 hyaline. Stamens 1-2 ; anthers short, oblong. Nut about J^ in. long, 

 obovoid, trigonous, shortly apiculate, dark brown, faintly granulate ; 

 style shorter than the nut, very slender ; stigmas 3, capillary, about 

 equalling the style. Distinguished from C. castaneus, which it much 

 resembles, by the nuts which are obovoid, those of C. castaneiis being 

 oblong and longer. C. B. Clarke, in Dyer's Fl. Trop. Africa, v. 8 (1902) 

 p. 328. Cyperus cuspidatus, H. B. & K. Nov. Gen. & Sp. v. 1 (1815) 

 p. 204 ; Boeck. in Linnaea, v. 35 (1868) p. 496 ; C. B. Clarke, in Journ. 

 Linn. Soc. v. 21 (1884) p. 88 & in Hook. f. Fl. B. I. v. 6, p. 598 ; Trim. 

 El. Ceyl. V. 5, p. 26 ; Woodr. in Journ. Bomb. Nat. v. 13 (1901) p. 430 ; 

 Prain, Beng. PI. p. 1139. 



Deccan: Lanoli, Woodrow. Sind: Pinwilll — Distrib. Throughout India ; Oeylon, 

 Tropical Africa, Java, China, Australia, America. 



16. Cyperus flavidus, Eetz. Oba. fasc. 5 (1789) p. 13. Annual ; 

 root fibrous, dark purple (Dalz. 4' Gibs.); stems tufted, 6-8 in. high, 

 weak, obtusely trigonous. Leaves shorter or longer than the stem, 

 -J^-i in. broad, linear, acute. Umbel compound or decompound, when 

 mature yellow or finally blackening ; rays many, the primary 1-2 in. 

 long, the secondary |-1 in. long, bearing heads of stellately spreading 

 minute spikelets; bracts 2-3, the longest reaching 6 in. long; hrac- 

 teoles 0. Spikelets i-| by jig- in., linear-lanceolate. Glumes -^\ in. long, 

 oblong, rounded (not mucronate) at the tip, with a green obscurely 

 y-nerved back, the sides with hyaline margins. Stamen 1 (rarely 2); 

 anthers linear, muticous. Nut -^ in. long, globosely obovoid, trigonous, 

 rounded, shortly and stoutly stipitate, at first pale-yellow, becoming 

 white when quite ripe. Dalzell & Gibson (Bo. Fl. p. 285) say that the 

 plant is easily recognized by its yellow hue. Fl. B. I. v. 6, p. 600 ; 

 Dalz. & Gil)s. p. 284; C. B. Clarke, in Journ. Linn. Soc. v. 21, p. 122; 

 Trim. Fl. Ceyl. v. 5, p. 27 ; Prain, Beng. PI. p. 1139. Cyperus Ilaspan 

 var. u indicus, Boeck. in Linnsea, v. 35 (1808) p. 574. 



Deccan : Dahcll ^ G//>so«.— Distrib. More or less throughout India in rice-fields ; 

 Cejlon, warm regions of the Old World. 



17. Cyperus difformis, Linn. Cent. PL part 2 (1755), in Amcen. 

 y1r«r/. V. 4 (1788) p. 302. A glabrous animal; root fibrous; stems 4- 



