SI 6 CLVi. CYPERACE^ (clarke). [C-ypei'ii^. 



Spikelets hard ; margins of the glumes not 

 incurved. 



Spikes all sessile 109. C. radiaiv.s. 



Spikes (some of them) pednncled . . . 110. C. exaltatus. 



Spikelets loose ; margins of the glumes in- 

 curved ..... . . 111. C. Pethericlci. 



Spikelets narrow-linear, nearly terete. Wings of 

 rhachilla yellow, early deciduous. 

 Stem at the top moderately trigonous ; umbel very 

 large. 

 Umbel rays tv^jj-yV '^^- ^" thickness . 

 Umbel rays %-}- in. in thickness 

 Stem at the top acutely triquetrous ; umbel not 

 very large ...... 



§ xviii. Papye.t:, — Tall. Flowering stem leafless, 

 ray.?. Plant 8-16 ft. high .... 



1. C. nudicaulis, Poir. in Lam. Encycl. vii. 240. Glabrous, 

 floating. Rhizome long, ~ in. in diam. Stems tufted, 1-2A ft. long, 

 at the top -^^ in. in diam., round trigonous. Leaves ; leaf -sheaths 

 pale-brown or reddish, the uppermost produced on one side O-J in. but 

 hardly green. Head 1, of 1-12 sessile spikelets; bracts 1-J>, lowest 

 often suberect, shorter than the head, as though a continuation of the 

 stem. Spikelets |-1 by \--\ in. (rarely up to \ in. broad), much 

 flattened, 30-40-flowered, sometimes 70-flowered, pallid or reddish. 

 Glumes very closely packed, ovate, boat-shaped, apiculate, S-o-nerved, 

 sometimes scabrous on the upper part of the keel, falling seriatim from 

 the lowest fertile glume ; rhachilla persistent. Stamens 3 ; filaments 

 broad ; anther-cells thick, muticous. Style long, linear ; branches 3, 

 linear, very short. Nut j the length of glume, ovoid, flattened, long 

 acuminate ; base of the nut, especially the margins, corky thickened. — 

 Kunth, Erium. ii. 48 ; Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 133, 

 and in Journ. Bot. 1884, 16, in Obs. ; C. B. Clarke in Dura.nd «t Schinz, 

 Conspect. Fl. Afr. v.. 570; K. Schum. in Engl. Pfl. Ost-Afr. C. 118; 

 Urban, Symb. An till. ii. 23 ; Rendle in Cat. Afr. PI. Wehv. ii. 112 ; 

 cfr. Benth. et Hook. f. Gen. PI. iii. 1044. C. pectinatus, Yahl, Enum. 

 ii. 298; Kunth, Enum. ii. 107. Atomostylis cyperiformis, and A. fla- 

 vescens, Steud. Syn. PI. Glum. ii. 315. Anosporum omidicanle, Boeck. 

 in Linnaea, xxxvi. 411, and in Flora, 1879, 561. 



Upper CrUinea. Senejiambia : ^dnwowt. Dolling er,41\ Cameroons : Yaunde, 

 Zenker Sf Staudt, 332! Cape Verd, Ferroitet ! !Niger Territory: TSupe; on the 

 margins of lakes. Barter, 1568 I 



irile I«and. White Nile, Schiveinfurth, 1117 ! Gazelle Kiver, ISchiceinfurth, 

 1146! 1157! 



liO'wer CS-uinea. Congo Free State : Kisantu on the Inkissi I'iver, Gillet, 

 1248! 1558! and without precise locality, Dewevre, 2531 Angola : Diindc ; by the 

 Dande River, Welwitsch, 7028 ! 



nXozamb. IDlst. German East Africa : Karagwe ; Bakoba, Sivhlmann, 1163 ! 

 and without precise locality, Fischer, 638 ! British Central Africa : Nyasaland ; 

 marshes near the River Shire, Kirk ! 



Also in Madagascar and Martinique. 



