Cyperus. | CLVI. CYPERACE (CLARKE). 321 
this and C. compactus type. The colour sometimes, as in Grant’s example, is 
golden-yellow ; but there is a complete series from this into straw-colour and into 
brown. 
Var. tenerior, C. B. Clarke in Durand & Schinz, Conspect. Fl, Afr. v. 552. 
Much slenderer with smaller spikelets and nuts,—Rendie in Cat. Afr. Pl. Welw. ii. 
112. 
Upper Guinea. River Niger, Baikie ! 
Lower Guinea. Angola: Huilla; in the pastures of Empalanca, 6000 ft., 
Welwitsch, 6803 ! 
This variety was founded on Welwitsch, 6803 ; Baikie’s (which has no rhizome) 
may prove to be different. There may be 1 (or 2) new species latent here. 
12. C. angolensis, Boeck. in Flora, 1880, 435. Rhizome oblique, 
4 by 4-4 in., clothed by stout ovate acute striate pale brown scales 4—2 
in. long. Stem solitary on the rhizome, 4-12 in. long. Leaves often as 
long as the stem, 4 in. broad. Bracts and head as of C. compactus, Lam. 
—Durand & Schinz, Etudes FI, Congo, i. 283. C. ochrocephalus, 
C. B. Clarke in Trans. Linn. Soc. ser. 2, Bot. iv. 53; Rendle in Cat. 
Afr. Pl. Welw. ii. 112; not Ryncospora ochrocephala, Boeck. 
Lower Guinea. Lower Congo: Kimuenza, Gillet, 1740! Angola: Huilla ; 
on dry hills near Lake Ivantala, 5000 ft., Welwitsch, 6838! Golungo Alto ; Sobato 
de Bumba, Welwitsch, 6813! marshy banks of the River Quiapoze, Welwitsch, 7014! 
Malange, Mechow, 182! 
South Central. Congo Free State; Zenze, Laurent ! Mukenge, Pogge, 1604! 
1605! Mpala, Descamps, 10! Wba Kionde, Dupuis! Mission Caba, Zilmann, 14! 
and without precise locality, Dewévre, 275 ! 
Mozamb. Dist. British Central Africa: Nyasaland; Mount Mlanji, Whyte! 
Mount Zomba, 3000-6000 ft., Whyte ! Mount Malosa, 4000-6000 ft., Whyte ! 
I cannot distinguish this species from C. compactus unless I have the rhizome. 
The spikelets are many-flowered ; and my naming it (Lc.) in 1894 C. ochrocephalus 
(which species has 3-2-flowered spikelets) was an error. The style is always 3-fid 
with me. 
13, C. margaritaceus, Vahl, Hnum. ii. 307. Glabrous. Stems 
6-24 in. long, thickened at the base by leaf-sheaths, contiguous, 
rhizome very short or 0. Leaves 3 the length of the stem, '5-} in. 
broad. Head 1, of 3-6 spikelets; bracts 3, lowest up to 2-4 im. long, 
Similar to the leaves. Spikelets up to } by }-} in., much flattened, 
white, straw-coloured or pale brown, 20-flowered. Glumes up to 4 in, 
long, very close-packed, muticous, with numerous strong striations. 
Nut 4-2 the length of the glume, ellipsoid, triquetrous with concave 
faces.—Schumach. & Thonn. Beskr. Guin. Pl. 33; Kunth, Enum. ii. 
46; Benth. in Hook. Niger FI. 550; Jardin, Herbor. 13; Boeck. in 
Linnea, xxxv. 529; C. B. Clarke in Journ. Linn, Soc. xxi. 110, in 
Durand & Schinz, Conspect. FI. Afr. v. 568, in Bull. Herb. Boiss. iv. 
Append. iii. 30, and in Dyer, Fl. Cap. vii. 169; Ridley in Trans. Linn. 
Soc. ser. 2, Bot. ii. 133; Ficalho et Hiern’ in Trans. Linn. Soe. ser. 2, 
Bot. ii. 26 ; K. Schum. in Engl. Pfl. Ost-Afr. C. 119; Durand & Schinz, 
Etudes Fl, Congo, i. 290; Rendle in Cat. Afr. Pl. Welw. ii, 112. 
C. eburneus, Thonning ex Kunth, Enum. ii. 46. 
VOL. VIII. Y 
