Cyperus. | CLVI, CYPERACEA (CLARKE). 339 
Mozamb. Dist. German East Africa: Kilimanjaro, 6600, Taylor! Unyam- 
wezi ; boggy ground near Kazeh (Tabora), Speke g& Grant ! 
The varietal name delicatula refers only to the slenderness of the spikelets. 
45. ©. lucentinigricans, K. Schum. in Engl. Pf. Ost-Afr. 
C.119. Stem thick, at the top triquetrous. Umbel 24 in. in diam., 
‘lense ; bracts } in. long, triangular. Spikelets }-} by ,), in., chestnut- 
coloured. Glumes obtuse, one-coloured, striate. 
Mozamb. Dist. German Kast Africa: Usambara, Holst, 3851! 
The head of this at Kew is very near C. denudatus, Linn. f., var. delicatula ; it 
differs in the shining black-chestnut colour ; the glumes are slightly larger and more 
striate. 
46. C. marginatus, 7hunb. Prodr.18. Glabrous. Rhizome woody. 
Stems 1-3 ft. long, hard, strong, terete, at the top terete or obscurely 
trigonous. Leaves hardly any; the top sheath produced lanceolate 
1-2 in., but hardly green or with any blade. Umbel simple or com- 
pound, contracted, with numerous brownish or somewhat chestnut- 
coloured spikelets; rays unequal; bracts 5-2, usually much shorter 
than the umbel, but sometimes as long. Spikelets 6—38-flowered, 
variable in length. Nut nearly 2 the length of the glume, ellipsoid, 
rather larger than that of C. denudatus, Linn. f.; otherwise like 
C. denudatus.—Thunb. Fl. Cap. ed. Schultes, 100; Boeck. in Linnea, 
xxxv. 571; Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 136; C. B. Clarke 
in Durand & Schinz, Conspect. Fl. Afr. v. 568, in Bull. Herb. Boiss. iv. 
Append. iii. 30, and in Dyer, Fl. Cap. vii. 173; Rendle in Cat. Afr. PI. 
Welw. ii. 114. 
Lower Guinea. Angola: Benguela; in damp maritime places south of the 
city, and near the banks of the River Bero, Welwitsch, 6859! German South-west 
Afriea : Hereroland, Fleck, 161 partly ! 897! Damaraland, Hen ! 
Abundant in South Africa. 
47. C. prolifer, Lam. Jil. i. 147. Glabrous. Rhizome creeping. 
Stems 12-28 in. long, terete or at the top obscurely trigonous. Leaves 
hardly any. Umbel of 50-100 subequal primary slender rays; bracts 
numerous, 0-1 in. long. Spikelets 1-5 together, digitate, } by j'5 in., 
6-12-flowered, dusky brown. Glumes boat-shaped, obtuse, apiculate. 
Stamens 3. Style as long as the nut; branches 3, linear, somewhat 
exserted, Nut } the length of the glume, minute, ovoid, trigonous, 
pallid.—C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 572; 
K. Schum. in Engl. Pf. Ost-Afr. C.119. C. equalis, Vahl, Enum. ii. 
320; Kunth, Enum. ii. 37; Boeck. in Peters, Reise Mossamb. Bot. 538, 
excl. var, B,and in Linnwa, xxxv. 577, excl. var. 3; C. B. Clarke in 
Journ. Linn. Soc, xx. 287, xxi. 123. 
Mile Land. British East Africa: Tsimba (Shimba) Mountains, Taylor ! 
Mozamb. Dist. Zanzibar, Kuntze, 206! Hildebrandt, 1066 | German East 
Africa : Zanguebar, Kirk, 3! Portuguese East Africa : Mozambique, Peters / 
Also in the Mascarene Islands. 
48. C. isocladus, Kunth, Enum. ii. 37. Stem trigonous, at the 
‘top triquetrous, often very minutely scabrous on the 3 faces ; otherwise 
