380 CLVI, CYPERACEZ (CLARKE). | Mariscus. 
Spikelets white-straw-coloured. 
Leaves 3 the length of the stem : , 52. MW. hemisphericus. 
Leaves } the length of the stem ' . 54. M. Gregorii. 
Spikelets yellowish-green. Leaves 4 in. broad . 53. MZ. alpestris. 
1. M. dregeanus, Kunth, Enum. ii. 120. Glabrous. Stolons 0. 
Stems approximate, at the base oblong-thickened by the scarious 
coloured leaf-sheaths, 6-14 in. long, slender, at the top trigonous and 
smooth. Leaves often as long as the stem, ;1,—} in. broad, weak, grass- 
like. Inflorescence $—} by }~} in., appearing as 1 very dense head of 
numerous spikelets, or as 2—3 densely congested spikes, straw-coloured 
or reddish or yellowish ; bracts 3-4, similar to the leaves, spreading, 
finally pendent, lowest 3-7 in. long. Spikelets } by ;, in., quad- 
rangular-cylindric obtuse, not compressed, bearing 2—6 (usually 3-4) 
nuts, disarticulating below: the lowest fertile flower in one piece; two 
empty glumes small, without caudate green tips. Glumes ovate, obtuse, 
not keeled, strongly 13-15-ribbed over their whole breadth, chaffy, 
persistent, their margins running down into the elliptic wings of the 
rhachilla. Stamens 3-2; anthers oblong, not crested. Nut } the 
length of the glume, oblong-ellipsoid, trigonous, from dark-brown to 
ashy-black, very smooth, the punctulation or reticulation very obscure. 
Style shorter than the nut; branches 3, linear, longish.—C. B. Clarke 
in Hook. f. Fl, Brit. Ind. vi. 620, in Durand & Schinz, Conspect. Fi. 
Afr. y. 586, and in Dyer, Fl. Cap. vii. 187; Durand & Schinz, Etudes 
Fl. Congo, i. 295; Rendle in Cat. Afr. Pl. Welw. ii. 120. M. Krauss, 
Hochst. in Flora, 1845, 756. M. kyllingiwformis, Boeck. in Flora, 
1859, 443, 496. I. viridis, Schweinf. Beitr. Fl. Aethiop. 217, accord- 
ing to the syn. cited. .Cyperus dubius, Rottler in Neue Schr. Ges. Nat. 
Freunde Berlin, iv. (1803) 193; Boeck. in Linnea, xxxvi. 336, in small 
part ; Ridley in Trans.- Linn. Soe. ser. 2, Bot. ii. 133 partly ; Lc are 
in Bolet. Soc. Brot. v. 209; Engl. Hochgebirgsfl. Trop. Afr. 143°; 
K.Schum. in Engl. Pfl. Ost-Afr. C. 121; not of Rottb. C. kyllingiwoides, 
Vahl, Enum. ii. 312; Kunth, Enum. ii. 94; Boeck. in Peters, Reise 
Mossamb. Bot. 543. C. cruentus, Boeck. in Linnea, xxxvi. 338, not of 
Rottb. C. scirpoides, Spreng. Syst. i. 218 partly. Schenus coloratus, 
var. 8, Linn. Sp. Pl. ed. 2, 64. Sch. niveus, Murr. Syst. Veg. ed. x1 
1. 
Upper Guinea. (iold Coast: Accra, Vogel! Don! Old Calabar ; Robb! 
Lower Guinea. Island of St. Thomas: near Santa Anna and gag ree 
Moller § Quintas in Fl, Afr, Exsice. Conimbric., 122! Lower Congo: Se 
300 ft., Hens, 32! 218! Angola: Loanda; in sandy soil near Penedo, rare, Welentoon, 
6807! Malange, Pogge, 462 ! 
Mozamb. Dist. Zanzibar, Schmidt, 68! German East Africa: Usambars ; 
Tanga, Volkens, 15! Usaramo; Dar es Salaam, Kuntze, 208! Rovama ise: 
Meller ! Portuguese East Africa: Angorna Island, Peters, 37! 139! Beira, caret si 
201! Luabo River, Kirk, 31! Lower Zambesi, at Shupanga, Kirk ! Inham aie 
Scott ! British Central Africa : -Boruma, on the -Zambesi, Menyharth, 662! Nye 
land ; Shire Highlands, Buchanan, 61! Zomba, 2800-3500 ft., Whyte! 
Also in South Africa, the Mascarene Islands, India and Borneo. 
