336 CLVI, CYPERACEE (CLARKE). | Cyperus. 
2-3, far overtopping the inflorescence, very narrow. Spikelets 3-10 to 
a spike, nearly digitate, 2 by } in., compressed, linear-lanceolate, 20-30- 
flowered, pallid; rhachilla wingless. Glumes closely packed, ovate, 
minutely mucronate, strongly 11—13-ribbed over their entire width. 
Stamens 3; filaments broad. Style deeply 3-fid. Nut 2 the length of 
the glume, obovoid, trigonous, ashy-black. 
Upper Guinea. Senegal, Adanson! 
40. C. sphzerospermus, Schrad. Anal. Fl. Cap. 8.  Glabrous. 
Rhizome horizontal, seen 2-4 in. by 1} in., nodose, with brown-red 
scales. Stems 6-14 in. long, approximate, tough, trigonous or triquetrous 
at the top. Leaves } the length of the stems or sometimes overtopping 
the stems, 4-4 in. broad, tough. Umbel compound or simple, 1-5 in. in 
diam. ; bracts about the length of the inflorescence, or frequently 
shorter, the longest sometimes only 1 in. Spikes of 3-8 digitate 
spikelets, from straw-colour to a rich brown. Spikelets } by 1-4 in., 
much compressed, 10—30-flowered. Glumes close-packed, muticous, 
paler on the keel, obscurely or not striate. Stamens 3; anthers 
narrow oblong. Style very short ; branches 3, linear, long. Nut 4-4 
the length of the glume, i.e. very small, trigonous, subspherical, pallid, 
ultimately brown.—Kunth, Enum. ii. 106; C. B. Clarke in Durand & 
Schinz, Conspect. Fl. Afr. v. 577, and in Dyer, Fl. Cap. vii. 172; 
K. Schum. in Engl. Pf. Ost-Afr. C. 119; Rendle in Cat. Afr. Pl. Welw. 
ii, 115. C. denudatus, Boeck. in Linnea, xxxv. 576 partly; C. B. 
Clarke in Journ. Linn. Soc. xxi. 124. huwillensis, Ridley in Trans. 
Linn. Soc. ser. 2, Bot. ii. 139, inel. var. aphyllus (which has long 
leaves). 
Nile Land. Somaliland, 3500 ft., Hildebrandt, 8730 ! 
Lower Guinea. Angola: Huilla; in various places near Humpata, Welwitsch, 
6865 ! 6867 ! 6868! 6869! banks of a stream near Bumbo, Welwitsch, 6889 ! 
Also in Madagascar and common throughout South Africa. 
C. denudatus, Linn, f., is common throughout South Africa, and hardly differs 
from C. spherospermus except in the want of leaves. The two have been much 
mixed, and finally united by Boeckvler. It is remarkable that the type example of 
Ridley’s var. aphyllus, in herb. Welwitsch., has long leaves. : 
Var. triqueter, C. B, Clarke in Durand & Schinz, Conspect, Fl. Afr. v. 578, and in 
Dyer, Fl. Cap. vii. 172. Stems very rigid, acutely trigonous at the top. : 
mower Guinea. German South-west Africa : Amboland; Olukonda, Schinz, 
Also in South Africa. : 
This variety differs from the type in unimportant points only. In recording 
it, I am able to explain that it was sent me marked Cyperus triqueter, 8 ! 
supposed, by Boeckeler; and J have given it the varietal name trigueter thereon. 
But I find that it was erroneously named ¢riqueter, not by Boeckeler ; and that 
Boeckeler’s triqueter was C. amabilis above. 
41. C. flabelliformis, Rotth. Descr. et Ic. 42, t.12, fig. 2. eapret 
Rhizome seen stout, horizontal ; also plants flowering weakly, in tufts, 
apparently the first season. Stem 3—2 ft. long, stout, at the top sear 
