Cyperus. | CLVI, CYPERACEZ (CLARKE). 343 
Mozamb. Dist. British Central Africa: Nyasaland ; in damp places on tlie 
Nyika Mountains, 6000-7000 ft., Whyte! Zomba Rock, Whyte ! 
The diagnosis above given is drawn from Schimper, 348. With this, Scott- 
Elliot, 7779, closely agrees, The southern Nyasaland examples of Whyte have the 
spikelets rather smaller, the glumes smaller and closer together on the rhachilla, 
5d. ©. derreilema, Stewd. in Flora, 1842, 585. Tall, robust. 
Umbel 4~7 in. in diam., dense with innumerable heads, red. Spikelets 
4-l by zo in. (i.e., larger than in C. fischerianus), moderately compressed, 
somewhat turgid, soft. Glumes rather close together on the rhachilla, 
not rigid nor mucronate; otherwise as C’. fischerianus.—Steud. Syn. Pl. 
Glum. ii. 20; A. Rich. Tent. Fl. Abyss. ii. 488; Boeck. in Linnea, 
xxxv. 583; C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 556 ; 
Engl. Hochgebirgsfl. Trop. Afr. 141. 
Nile Land. Abyssinia: in the middle region of Mount Silke, Schimper, 659 ! 
and without precise locality, Schimper, 534! British Kast Africa: Ruwenzori, 
10,000 ft., in the bamboo forest, Scott-Elliot, 7731 ! 
This species again is exceedingly near the preceding; and the difficulty of 
diagnosing it is not lessened by the fact that in Schimper, 659 (the type of authors), 
the spikelets have been attacked by smut, and no good nut is to be sven. 
56. C. Ajax, C B. Clarke. Glabrous. Top of the stem stout, 
triquetrous. Umbel 10-12 in. in diam., decompound ; rays and raylets 
numerous, stout; bracts overtopping the umbel, {—1 in. broad, 3-nerved. 
Spikes 200-400 to the umbel, red-brown, of 3-5 spikelets each. Spike- 
lets } by 1 in., compressed, 6—10-flowered. Glumes ovate, with a small 
mucro. Nut 3? the length of the glume, ovoid, at the base and apex 
pyramidal. Otherwise as C. derreilema. 
Mozamb. Dist. British Central Africa : Nyasaland; Mount Zomba, 4000-— 
6000 ft., Whyte! Mount Malosa, 4000-6000 ft., Whyte ! 
The two collections of this each show the umbel only with the bracts cut down. 
It differs from C, derreilema in the shorter, broader, more compressed spikelets 
4s well as in the very broad bracts. 
57. CG. diffusus, Vahl, Hnum.ii.321. Glabrous. Stolons 0; roots 
wiry. Stem 1-2 ft. long, triquetrous at the top. Leaves often numerous, 
as long as the stem, }—} in. broad, 3-nerved. Umbel 4-10 in. in diam., 
usually compound or decompound, rather dense, green; bracts 0-8, 
long, overtopping the umbel, similar to the leaves. Spikes digitate, of 
3-9 spikelets. Spikelets }-} by 4 in., 4—14-flowered, compressed. Glumes 
ovate, acutely keeled, grey-green, strongly en 1-nerved, with a recurved 
conspicuous mucro, in fruit squarrose (being forced outwards by the 
large nut). Style short ; branches 3, linear, long. Nut large, nearly 
as long as the glume (excluding its mucro), broadly ellipsoid, trigonous, 
smooth, dusky black.—Kunth, Enum. ii. 30; ©. B. Clarke in Hook. f. 
Fl. Brit. Ind. vi. 603, and in Durand & Schinz, Conspect. FI. Afr. v. 557; 
Durand & Schinz, Etudes, Fl. Congo, i. 286; Urban, Symb. Antill. ii. 
30; Renttle in Cat. Afr. Pl. Welw. ii. 113. C. elegans, Swartz, Obs. 
Bot. 30; Kunth, Enum. ii. 28; Benth. in Hook. Niger Fl. 549; Boeck. 
in Linnea, xxxv. 532; Ridley in Trans. Linn. Soe. ser. 2, Bot. ii. 135; 
