Cyperus. | CLVI. CYPERACEE (CLARKE). 351 
mucronate, approximate, in fruit spreading, but little imbricated. Nut 
often curved ; otherwise as C’. distans.—Boeck. in Linnea, xxxv. 596; 
C. B. Clarke in Hook. f. Fl. Brit. Ind. vi. 608, and in Durand & Schinz, 
Conspect. Fl. Afr.v. 559; Engl. Hochgebirgsfl. Trop. Afr. 141 ; Schweinf. 
in Bull. Herb. Boiss. ii. Append. ii. 48. C’. xanthopus, Steud. in Flora, 
1842, 595; A. Rich. Tent. Fl. Abyss. ii. 485. C. kotschyanus, Fenzl 
ex Steudel, Syn. Pl. Glum. ii. 36. 
Nile Land. Upper Sennar: Fazokl, Kotschy, 528! Galabat: region of 
Matamma, Schweinfurth, 2005! 2006! Abyssinia: Modat; by streams in Augar 
Valley, Schimper, 1021! near Demerki, 1155! 
Also in the Orient, India, China, Malaya and Queensland. 
71. ©. latifolius, Poir. in Lam. Encycl. vii. 268. Glabrous. 
Stolons long, {1 in. thick. Stem 2-3 ft. long, at the top acutely tri- 
quetrous. Leaves } the length of the stem, ? in. broad. Umbel 
compound, dense ; secondary umbels pyramidal, corymbose; bracts 
overtopping the umbel, similar to the leaves. Spikes of 4-8 spike- 
lets; rhachis glabrous or scarcely hairy. Spikelets } by } in, 
moderately compressed, pallid or reddish, 8-16-flowered. Glumes 
imbricated even in fruit, obtuse. Nut 4 the length of the glume, 
obovoid, trigonous, black.—Kunth, Enum. ii. 75; Boeck. in Linnea, 
xxxy. 602; C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 565, 
and in Dyer, Fl. Cap. vii. 177 ; K. Schum. in Engl. Pf. Ost-Afr. C. 120. 
Nile Land. British East Africa: Nandi Range, north of Victoria Nyanza, 
6500 ft., Scott-Elliot, 6905! 
South Central. Angola: Malange, Buchner / 
Mozamb. Dist. Portuguese East Africa: East coast of Lake Nyasa, 
Johnston, 6! British East Africa : Nyasaland; Zomba Plains, 2500-3000 ft., 
Whyte / Mount Zomba, 4000-6000 ft., Whyte / 
Also in South Africa and the Mascarene Islands. 
72. C. socialis, C. B. Clarke in Durand & Schinz, Conspect. Fl. 
Afr.v.577. Glabrous, leafless. Rhizome horizontal, thick. Stem 3 ft. 
long, stout, at the top acutely triquetrous. Umbel compound, con- 
tracted, dense; bracts several, the lowest 16 by $ in. Spikelets up to 
30 in the cylindric spikes, spreading, } by ;}, in., a little compressed, 
8-10-flowered ; rhachilla very narrowly winged. Glumes rather remote, 
dusky, obtuse. Style 3-fid. Nut } the length of the glume, oblong- 
bovoid, black.—Rendle in Cat. Afr. Pl. Welw. ii. 118. C. latifolius, 
Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 188, not of Poiret. 
Lower Guinea. Angola: Cazengo; at the Lake of Moembege, not plentiful, 
Welwitsch, 7068 ! 
The spikes and the spikelets resemble those of C. pilosus, Vahl ; but the rh ichis 
of the spike is quite glabrous, 
73. C. pilosus, Vahl, Enum. ii. 354. Glabrous, except the rhachis 
of the spikes. Stolons slender, finally hardening into rhizomes. Stem 
1-2} ft. long, at the top acutely triquetrous. Leaves j the length of 
the stem, 4-1 in. broad. Umbel usually compound; rhachis of the 
