C yperus. | CLVI. CYPERACER (CLARKE). 341 
Lower Guinea. Lower Congo; margin of Stanley Pool, 1000 ft., Hens, B, 
7! 69! 389! 
Owing to the close packing of the glumes on the rhachilla, the spikelets of this 
Species are very unlike those of C. dichromeneformis ; but the two species agree in a 
great number of minute points and may prove to be but one. 
51, C. fertilis, Boeck. in Engl. Jahrb. v. 90, vii. 331. Glabrous. 
Rhizome woody, seen short. Stems 2-6 in. long, at the top triquetrous. 
Leaves longer than the stem, lanceolate, 4-2 in. broad, 3-nerved, flat. 
Umbel simple ; primary rays 3-8, up to 8-12 in. long, flexuose, at the 
top triquetrous ; bracts 4~7, similar to the leaves, lowest 4—6 in. long. 
Spikes digitate, of 1-4 spikelets, ebracteate, but not rarely subproliferous 
or rooting, then producing a leaf. Spikelets 2 by } in., ovate, much 
flattened, pallid, 10-20-flowered. Glumes ovate, obtuse, 11—15-striate ; 
rhachilla slightly winged. Stamen 1; anther crested. Style very 
short ; branches 3, long. Nut % the length of the glume, ovoid, tri- 
gonous, smooth, brown, finally black.—C. B. Clarke in Durand & Schinz, 
Conspect. Fl. Afr. v. 562 ; Durand & Schinz, Etudes Fl. Congo, i. 287 ; 
Rendle in Cat. Afr. Pl. Welw. ii. 113. (. Lanceola, Ridley in Trans. 
Linn, Soe. ser. 2, Bot. ii. 134. 
Upper Guinea. Old Calabar River, Mann, 2332! Holland, 57 ! Cameroons : 
Rio del Rey, Johnston! Efulen, near the river, Bates, 237! Mungo, Naumann, 
Buchholz (ex Boeckeler), and without precise locality, Buettner, 551! Braun, 16! 
Preuss, 30! 
Lower Guinea. Gaboon River, Mann, 1021! Lower Congo; Bussindi, 
1000 ft., Hens, C, 160! Stanley Pool, Duchesne, 206! Angola: Pungo Andongo ; 
marshes of Mato do Pedro Cabondo, rather rare, Welwitsch, 6896! Golungo Alto: 
by streams at Calomba Queta, Zengas do Queta, and near Canguerasange, rare, 
Welwitsch, 7094! 
South Central. Congo Free State: Bangala, on the Congo, Duchesne, 20! 
This striking species is at once recognised by the umbel-rays being longer than 
the stems. In cultivation at Kew, the umbel-rays trail all round the plant. 
52. C. Mannii, (. B. Clarke in Durand & Schinz, Conspect Fl. Afr. 
v. 568. Glabrous. Rhizome short, horizontal, clothed by brown scales, 
Stem 3-1 ft. long, at the top triquetrous, smooth. Leaves nearly as 
long as the stem, } in. broad in the type plant (Mann, 1358), scarcely 
4 in. broad in Mann, 2107, 3-nerved. Umbel compound with many 
spikes 6 in. in diam. ; bracts 5, lowest up to a foot long, similar to the 
leaves. Spikes of 3-6 clustered spikelets, pale reddish-brown, when 
young greenish. Spikelets 1-1 by j!; in., moderately compressed, 
8-12-flowered. Glumes closely packed, ovate, acute, apiculate, scarcely 
mucronate, with 4 moderate strize on each side, in fruit a bright red- 
brown. Stamens 3; anthers linear, connective elongated into a distinct 
crest. Style short; branches 3, long. Nut ? the length of the glume, 
‘ovoid, sharply trigonous, pyramidal at the top and base, smooth, brown, 
finally black.—K. Schum. in Engl. Pfl. Ost-Afr. C. 119. C. deptocladus, 
Boeck. in Linnea, xxxv. 581 ; Engl. Hochgebirgsfl. Trop. Afr. 141, 
not of Kunth. (. ingratus, Hook. f. in Journ, Linn. Soc. vil. 224, not 
of Kunth. (. elegans, Ridley in Bolet. Soc. Brot. v. 208. 
