;»48 CLvi. CYPERACELE (clarke). [Ci/pe7'us. 



iMO'wer Guinea. Angola : Loando ; near Cabo Lombo, Welwitsch, 7021 ! 7045 ! 

 ponds near Cumano, Welwitsch, 7026 ! Mossamedes ; damp places at the public 

 <^arden, near Mossamedes, Welv:itsch, 6884 ! 



Mozamb. Oist. TjKniAh&r, Hildehrandt, 1072! Schmidt, Q4:\ German East 

 Africa: Zanguebar, Zir^ / Usambara ; Amboni, Hoist, 2583! Portuguese East 

 Africa: Cln\\\\wa,ne, Zimmermann ! Zambesi Delta; Luabo River, ^ir^ / British 

 Central Africa : Boruma, on the ZamVesi, Menyharth, 583 ! 



And in nearly all tropical and subtropical countries. 



06. C. incompressus, C. B. Clarke. Annual, glabrous. Stems 

 12-18 in. long, tufted, triquetrous, almost 3-winged. Leaves J the 

 length of the stem, V in. broad. Umbel in appearance simple, of 3-5 

 very unequal rays, lower up to 8 in. long ; bracts 3-4, similar to the 

 leaves, lowest about as long as the umbel. Spikelets 3-5 together, 

 shortly spicate, up to 1 by J in., moderately flattened, 16-24-flowered, 

 pallid, tinged with rose. Glumes concave, obtuse, obscurely keeled, 

 somewhat inflated, 3-nerved on the back ; rhachilla not winged. 

 Stamens 3 ; anthers shortly oblong. Nut J the length of the glume, 

 obovoid, acutely triquetrous ; style shorter than the nut ; branches 3, 

 little exserted. 



Upper Guineaa Sierra Leone: in swamps near Kambia, on the River Scarcies, 

 Scott- Elliot, 4373 ! 



This has been distributed as C. compressus, Linn. ; the obtuse round-backed 

 glumes are very different. 



67. C. aristatus, Rotth. Descr. et Ic. 23, t. 6, fig. 1. Annual, 

 glabrous. Stems 1-7 in. loug, tufted. Leaves often as long as the 

 stem, -^ in. broad. Umbel appearing simple (or of 1 spike) ; rays 1-6, 

 up to 3 in. long ; bracts similar to the leaves, lowest usually over- 

 topping the umbel. Spikes J by J in., cylindric or subovoid, dense, of 

 5-40 spikelets, finally brown, spreading. Spikelets J by J in. (or 

 usually smaller), compressed, 6-30-llowered ; rhachilla not winged. 

 Glumes ovate-lanceolate, 7-9-striate over nearly their whole breadth, 

 keel excurrent into a conspicuous recurved bristle. Stamen 1 . Nut J 

 the length of the glume (mucro included), oblong or narrowly obovoid, 

 dusky brown ; style shorter than the nut ; branches 3, shortly exserted. 

 — Schumach. Beskr. Guin. PI. 39; Kunth, Enum. ii. 23; Steud. in 

 Flora, 1842, 585 ; A. Rich. Tent. Fl. Abyss, ii. 478 ; Benth. in Hook. 

 Niger Fl. 549; Boeck. in Linn?ea, xxxv. 500, and in Flora, 1879, 548 

 (excl. the vsyn. C. ham.ulosus, M. Bieb.) ; T. Thoms. in Speke, Nile, 

 Append. 653; Oliver in -Trans. Linn. Soc. xxix. 164; Schweinf. Beitr: 

 Fl. Aethiop. 215; Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 130; 

 C. B. Clarke in Hook. f. Fl. Brit. Ind. vi. 606, in Durand & Schinz, 

 Conspect. Fl. Afr. v. 548, in Bull. Herb. Boiss. iv. Append, iii. 29, 

 and in Dyer, Fl. Cap. vii. 179; Schweinf. in Bull. Herb. Boiss, ii. 

 Append ii. 46 ; Ficalho & Hiern in Trans. Linn. Soc. ser. 2, Bot. ii. 2Q ; 

 K. Schum. in Engl. Pfl. Ost-Afr. C. 118 ; Rendle in Cat. Afr. PI. Welw. 

 ii. 110. C. squarrosus, Linn. Amcen. Acad. iv. 303, and Sp. PI. ed. 2, 

 G6 partly. Dichostylis aristata, Palla in Engl. Jahrb. x. 296 



