Cyperus. | _ CLVI, CYPERACE& (CLARKE). 335 
} the length of the glume, trigonous, broadly oblong, smooth, chestnut- 
red, dotted.—De Wild. & Durand, Ill. Fl. Congo, i. 15, t. 8. 
South Central. Congo Free State: Lisha, 1000 ft., Hens, C, 364! 
or 
37. ©. Boehmii, Boeck. in Engl. Jahrb. v. 498. Stems 15 in. 
long, slender, roundish. Leaves 4 the length of the stem, ;1,-} in. 
broad. Umbel-rays 10-12, up to 2 in. long, very slender, bracts as 
long as the umbel, linear. Spikelets 20-40 to a spike, up to 1 by 
z's in., 30-flowered, black ; glumes rather distant, otherwise as (’. tenaa.— 
C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 550; K. Schum. 
in Engl. Pfl. Ost-Afr. C. 118. 
Nile Land. British East Africa : Rabai Hills and Tsimba (Shimba) Mountains, 
Taylor! 
Mozamb. Dist. Zanzibar, Schmidt, 59! German East Africa: Karagwe; 
Bukoba, Stuhlmann, 1104! Unyamwezi; Msalala, Hannington! Ugalla district, 
Boehm, 75! 
The long, very slender spikelets are handsome, and they differ from those of 
C. tenax in the glumes being more distant, but in some examples they are hardly 
longer than in C, tenax. 
38. C. apricus, Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 141. 
Glabrous. Rhizome seen 3-1} in. long, densely covered with coarse 
stiff fibres (the remains of scales). Stems 2-10 in. long, slender, at the 
top trigonous, at the base surrounded by stiff fibres, approximate. 
Leaves 2 the length of the stem, ;},; in. broad. Umbel-rays 1-4, up to 
I} in. long, often very short, or inflorescence contracted into 1 head; 
bracts 2-3, much overtopping the inflorescence, .); in. broad. Spikelets 
3-12 to a spike, subdigitate, brown-red, }-} by 1, in., compressed, 
5-22-flowered, with parallel sides. Glumes ovate, obtuse or very 
minutely apiculate, 7—9-striate. Filaments long, exserted, slender ; 
anthers linear-oblong. Style linear, long; branches 3, linear, about } 
the length of the undivided part of the style.—C. B. Clarke in Durand 
& Schinz, Conspect. Fl. Afr. v. 548, and in Bull. Herb. Boiss. iv. 
Append. iii. 29; K. Schum. in Engl. Pf. Ost-Afr. C. 118; Rendle in 
Cat. Afr. Pl. Welw. ii. 118. C. Schinzii and C. purpureus, Boeck. in 
Verhandl. Bot. Ver. Brandenb. xxix. 45. 
Lower Guinea. Angola: Pungo Andongo; between Muta Lucala and 
Quibonda, Welwitsch, 6915! and without precise locality, Welwitsch, 7163! 9164! 
te South-west Africa : Amboland; Oshiheke, Schinz, 384! Olukonda, Schinz, 
Schinz, 383 (type of C. purpureus, Boeck.), has 4 spikes; Schinz, 384 (type of 
C, Schinzii, Boeck.), has 1 spike ; otherwise they seem to me identical. The branches 
ing so much shorter than the undivided part of the style separates this species com- 
pletely from most species of Cyperus except C. semitrifidus, Schrader (Cape), which 
has much broader spikelets. C. holostigma (n. 6 above) is possibly a depauperated 
state of C. apricus ; it has the style subentire and the spikelets black. 
39. ©. Adansoni, (. B. Clarke in Durand & Schinz. Conspect. Fl. 
Afr. v. 546. Glabrous. Rhizome hardly any. Stems 3 in. long, at the 
top trigonous, at the base woody, approximate. Leaves 4} by ;);—;';in., 
green, weak. Spikes 1, or with a second on a ray ? in. long; bracts 
