382 CLVI, CYPERACEZ (CLARKE). [ Mariseus. 
long as the nut; branches 3, linear.—Cyperus diwrensis, Boeck. in 
Flora, 1879, 556 ; K. Schum. in Engl. Pfl. Ost-Afr. C. 121 (djurensis). 
Nile Land. British East Africa: Jur; Jur Ghattas, Schweinfurth, 198! 
Mombasa, Taylor ! 
Mozamb. Dist. Zanzibar, Taylor! 
Var. gondana, C, B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 586. 
Stems 12-16 in, long, less thickened at the base. Bracts less dilated at the base— 
Cyperus gondanus, Boeck. Cyp. Nove, i. 3. 
Mozamb. Dist. German East Africa: Karagwe; Bukoba, Stuhlmann, 967 ! 
Unyamwezi; Gonda (Igonda), Boehm, 674! 
These examples are young, and may prove separable from M. diurensis when the 
fruit is known, 
4. M. firmipes, (. B. Clarke. Basal sheaths firm, red-brown, 
with 20-40 strong ribs. Spikelets 2-3-flowered. Glumes when young 
thin, with few obscure ribs and no glands; otherwise as M. diwrensis. 
Mozamb. Dist. British Central Africa: Nyasaland; Zomba and Plains, 
2500-3500 ft., Whyte! 
The base of the stems not seen. 
5. M. remotus, C. B. Clarke in Durand &: Schinz, Conspect. Fi. Afr. 
v. 591. Glabrous. Stems 8-16 in. long, slender, at the top trigonous 
and smooth, at the base oblong-thickened by somewhat-torn leaf- 
sheaths. Leaves 3 the length of the stem, =; in. broad. Head 1, } in. 
in diam., globose, of 30-40 spikelets, golden-yellow ; bracts 3—2, some- 
what dilated at the base, similar to the leaves, lower 1-2 in. long. 
Spikelet 2-flowered, producing 2 (or 1) nuts. Glumes very remote on 
the rhachilla, oblong-elliptic, very obtuse, thin, 9—13-striate. Stamens 
3; anthers narrow, oblong, muticous, much exserted. Nut 3 the 
length of the glume, oblong-ellipsoid, trigonous, at the top acuminate. 
Style long; branches 3, long, much exserted. 
South Central. Congo Free State: River Lavoi (Luvoi), Descamps ! 
The fruit is not ripe and I did not ascertain that the rhachilla disarticulates 
above the two lowest glumes. The acuminate nut is not like Mariscus: the genus of 
this plant is thus not certain. 
6. M. maritimus, (0. B. Clarke in Journ. Bot. 1896, 226. 
Glabrous. Stem 16 in. long, slender, at the top trigonous and smooth, 
at the base scarcely thickened but with long loose bright-brown striate 
leaf-sheaths, torn into fibres. Leaves 12 by 3J5 in., weak. Inflores- 
cence of 5-6 spikes almost completely fused into 1 ovoid head, 3 in. 1» 
diam., chestnut-red ; bracts 4, similar to the leaves, lowest 35 in. long. 
Spikelets by 4; in., 4-flowered, producing 3 nuts, caducous in 'ne 
piece above the two lowest empty glumes. Glumes ovate, many 
ribbed, neither acute nor keeled. Nut 2 the length of the pea 
oblong, trigonous, red-brown. Style linear, shorter than the nut; 
branches 3, linear. : 
Wile Land. British East Africa: on the sands of the seashore at Mambrw 
(Mombrui), Gregory ! 
