334 CLVI. CYPERACEZ (CLARKE). | Cyperus. 
Upper Guinea. Interior of Senegal, Léeard, 98! with capillary stem and 
leaves, Lécard, 165 partly ! 
Wile Land. British East Africa: Jur; Jur Ghattas, Schweinfurth, 2005! 
35. ©. tenax, Boeck. in Linnea, xxxv. 504. Glabrous. Rhizome 
very short. Stems 4—16 in. long, tufted at the top, trigonous. Leaves 
2 the length of the stem, }—} in. broad. Umbel simple, rarely some- 
what compound ; rays 1—7, 0-2 in. long ; bracts overtopping the umbel, 
similar to the leaves, often slightly distant. Spikes of 3-16 digitate 
spikelets, chestnut-black to chestnut-brown, spikelets +—2 by 4’; in., 
compressed, 8—20-flowered, linear with parallel sides. Glumes ovate, 
obtuse, boat-shaped, hard, often shining. Stamens 3. Style much 
shorter than the nut; branches 3, linear, long. Nut }—% the length of 
the glume, trigonous, narrowly ellipsoid, finally black.—C. B. Clarke in 
Durand & Schinz, Conspect. Fl. Afr. v. 578, and in Dyer, Fl. Cap. vii. 
170; K. Schum. in Engl. PA. Ost-Afr. C. 118; Durand & Schinz, 
Etudes Fl. Congo, i. 293; Rendle in Cat. Afr. Pl. Welw. ii. 111. 
C. Grantii, Boeck. ex Oliver in Trans. Linn. Soc. xxix. 164. C. 
actinostachys and C. andongensis, Ridley in Trans. Linn. Soc. ser. 2, 
Bot. ii. 140, and C. sabulicolus, Ridley, 1.c. 136. C. andongensis, Rendle 
in Cat. Afr. Pl. Welw. ii. 111. C. monroviensis, Boeck. in Engl. Jahrb. 
v. 90, and in Engl. Gazelle Reise, Bot. 14. Cyperus, sp. n. 15, T. Thoms. 
in Speke, Nile, Append. 654. 
Upper Guinea. Liberia: Monrovia, Naumann (ex Boeckeler). 
Wile Land. British East Africa; Uganda, Scott-Elliot, 7494! Rabai Hills 
and Tsimba (Shimba) Mountains, near Mombasa, Taylor / 
Lower Guinea. Lower Congo : Lutete, 2000 ft., Hens, 360 partly! Kisantu, 
Gillet, 1584! Angola: Ambriz, Welwitsch, 7038! Barra do Bengo, Welwitsch, 
7049! Pungo Andongo, 3500 ft., Welwitsch, 6794! 6928! 6929! 6931! Huilla, 
5000 ft., Welwitsch, 6866! 6874! River Nene, Newton, 21! 
Mozamb. Dist. Zanzibar, Taylor! Kuntze, 304! German East Africa : 
Usambara ; Tanga, Holst, 20844! Unyamwezi; near Tabora, 3800 ft., Speke 4 
Grant! British Central Africa: Nyasaland, Buchanan, 1439! Rhodesia ; Leshumo 
Valley, Holub ! 
Also in Natal and the Transvaal. 
The spikelets merely vary a good deal in length in this species ; I see no other 
ground for the variety of names given it. 
36. C. Hensii, Durand &: Schinz, Etudes Fil. Congo, i. 289. Glabrous. 
Stems 16 in. long, decumbent at the base (not annual), at the top 
ys in. in diam., rounded. Leaves 4 the length of the stem, 4 in. wide, 
inrolled when dry ; sheaths torn, scarious, red-brown. Umbel simple, 
contracted ; rays 1-6, 0-3} in. long, bracts 4—5, up to 24 in. long, 
similar to the leaves, dilated at the base. Spikelets 12-20 toa spike, 
digitate, 4 by 31, in., compressed, pale brown, 16-24-flowered, wit 
parallel sides ; rhachilla somewhat zigzag, with narrow hyaline wings- 
Glumes close-packed, ovate, obtuse, nerved only on the keel. Style 
hardly any; branches 3, linear, hardly longer than the nut. Nut 
