340 CLVI, CYPERACEH (CLARKE). [ Cyperus. 
as in C. prolifer,—C, B. Clarke in Durand & Schinz, Conspect. Fl. Afr. 
v. 565, and in Dyer, Fl. Cap. vii. 175. C. equalis, var. 8, Boeck. in 
Peters, Reise Mussamb. Bot. 538, and in Linnea, xxxv. 578. 
Mozamb. Dist. Zanzibar, Taylor! Portuguese East Africa : Mozambique, 
Peters! 
Common in South Africa. 
As in so many cases where species of Cyperacee have been established on a difference: 
in the stems (rouid or trigonous), it is a matter of taste whether the present plant 
be arranged as a species or as a variety of C. prolifer. 
49. ©. dichromenzformis, var. major, Boeck. in Flora, 1879, 
549. Rhizome woody, nodose. Stems 12-30 in. long, at the top 
unequally trigonous, almost flattened. Leaves nearly as long as the 
stem, 4-4 in. broad, 3-nerved, flat, grass-like. Head 1 of 12-34 spike- 
lets; bracts 4-5, lowest up to 10 by } in., similar to the leaves. 
Spikelets } by nearly } in., much flattened, 12—20-flowered, straw- 
coloured. Glumes boat-shaped, ovate, obtuse, distant on the rhachilla, 
in fruit hardly imbricate, obscurely many-striate, on the margins and 
keel very minutely hairy. Stamens 3; anthers almost crested. Style 
shorter than the nut; branches 3, long. Nut 2 the length of the 
glume, trigonous, shining brown.—Ridley in Trans. Linn. Soc. ser. 2, 
Bot. ii. 132; C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 
556; Durand & Schinz, Etudes Fl. Congo, i. 285; Rendle in Cat. Afr. 
FL Welw i. 111, 
Upper Guinea. Togo; Buettner, 144! 
Nile Land. British East Africa: Niamniam; Kulenjo, Schweinfurth,. 
3886 ! 
Lower Guinea. Lower Congo: Kisantu, Gillet, 295! Angola: Pungo 
Andongo; banks of the Rivers Cuanza and Cuije, Welwitsch, 6901! by springs On 
the more lofty rocks of the Presidium, Welwitsch, 6902! 7149! Golungo Alto ; 
on the edge of marshes, &c.,on the more lofty heights of Queta, rather rare, 
Welwitsch, 7093! 
South Central. Congo Free State: Monbuttu; Munza, Schweinfurth, 3461! 
The typical C. dichromeneformis, Kunth, is from Brazil; it is a much smaller and 
weaker plant than the African, with ne definite rhizome. The African plant 1s 
doubtless closely allied, either as a species or a geographic race. 
50. ©. mapanioides, (. 2B. Clarke in Durand & Schinz, Conspect. 
Fl, Afr. 568. Stolon 1 in. in diam., covered by scales scarcely ¢ in. 
long. Stem 16 in. long, rather stout, acutely and equally triquetrous 
at the top. Leaves as long as the stem, } in. broad, flat, 3-nerved. 
Head 1, very dense, of 50 spikelets; bracts 4—5, lowest up to 1 ft. a 
similar to the leaves. Spikelets 2 by 4 in., moderately compress? 
10-16-flowered, pale brown or cinnamon-coloured. Glumes ovate, 
boat-shaped, very close-packed on the rhachilla, much imbricated 10 
ripe fruit, tip narrow-triangular, hardly acute, nerves many, per 
very minutely hairy. Stamens 3; connective not produced. Style short ; 
branches 3, long. Nut 3 the length of the glume, trigonous, ener 
brown.—Durand & Schinz, Etudes FI. Congo, i. 290; De wild. 
Durand, Ill. Fl. Congo, i. 47, t. 24. 
