Cyperus. | CLVI. CYPERACEH (CLARKE). 325 
Also in the Mediterranean Region, Arabia, Beloochistan and Sind. 
Var. Aucheri, C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr, v. 554. 
Very bright. Spikelets larger, shining, up to 2 by ? in. with 46 flowers; rhachilla 
broad.— C. Aucherii, Jaub. & Spach, Ill, Fl. Orient. t. 101; C. B. Clarke in Journ, 
Linn. Soe. xxi, 114. 
North Central. On sand-bills near Agadem Oasis, Vogel ! 
Also in Egypt. 
This is a very striking plant ; the glumes in the ripe spikelet are jig in. apart on 
the rhachilla; so that, if it is not admitted as a species, it must be appended 
to C. conglomeratus, and not to C. effusus, i.e. according to the diagnosis of these 
two critical species given here. 
20. C. cruentus, Rotth. Descr. et Ic. 21, t. 5, figs. 1,4. Stems at 
the top trigonous. Spikelets narrower and glumes less distant on the 
rhachilla, but otherwise as C. conglomeratus.— Kunth, Enum. ii. 82; 
C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 555. C. falcatus, 
Boeck. in Linnea, xxxv. 546, and in Flora, 1879, 550 ; Schweinf. Beitr. 
Fl. Aethiop. 215, and in Bull. Herb. Boiss. ii. Append. ii. 47; Zarb, 
Cat. Spéc. Bot. Pfund, 39. (. proteinolepis, Steud. Syn. Pl. Glum. ii. 
15 partly ; Boeck. in Linnea, xxxv. 522 partly (at least Kotschy, n. 21, 
cited). C. cwrvulus, Boeck. in Linnea, xxxv. 541 partly. C. conglo- 
meratus, T. Anders. in Journ. Linn. Soc. v. Suppl. i. 38; C. B. Clarke 
in Journ. Linn. Soc, xxi. 112, var. a; Schweinf. in Bull. Herb. Boiss. 
li. Append. ii. 47. C. pungens, var. multiculmis, Boeck. in Linnea, 
XXxvV. 538. 
Nile Land. Nubia: Dongola, Ehrenberg ! Abu-Gerad, Kotschy, 21! O-bak, 
Schweinfurth, 645! Kordofan, Pfund, 245! 466! Fogel, Pfund, 610 (ex Zarb). 
Eritrea: near Massowa, Steudner, 912! Schweinfurth & Riva, 66! 208 ! 
Also Egypt, Arabia and Beloochistan. 
Var. excisus, C. B. Clarke in Durand & Schinz, Conspect. FI. Afr. v. 555. Glumes 
more mucronate, their tips slightly spreading in fruit.— C. excisus, Boeck. in Linnea, 
XXxv, 523. 
Upper Guinea. Senegambia, Heudelot, 517! Senegal, Perrottet ! 
In this variety, as in most of C. cruentus type, the spikelets as they ripen get 
very brown; in C. conglomeratus they usually remain pallid. Ina given length of 
rhachilla there are nearly twice as many nuts in C. cruentus as there are in C. con- 
glomeratus, 
21. C. effusus, Rotth. Descr. et Ic. 22, t. 12, fig. 3. Stem rather 
stouter, striate, terete, hardly at all trigonous even at the top. Spikelets 
nearly as those of (. cruentus, i.e. narrower with less distant glumes 
than the spikelets of C’. conglomeratus, otherwise as the two last species. 
—Kunth, Enum. ii. 47; C. B. Clarke in Hook. f. Fi. Brit. Ind. vi. 603, 
and in Durand & Schinz, Conspect. Fl. Afr, v. 599. C. proteinolepis, 
Steud. Syn. Pl. Glum. ii. 15 partly; Boeck. in Linnea, xxxv. 522 
mainly; C. B. Clarke in Journ. Linn. Soc. xxi. 113. C. acutiflorus, 
Steud. Syn. Pl. Glum. ii. 33. C. conglomeratus, var. a, Coss. & Durieu, 
Expl. Scient. Algér. Glum. 243. C. conglomeratus, var. effusus, Boiss. 
- Orient. v. 369.. C. conglumeratus, var. major, Boeck. in —— 
Xxxv. 544 partly; C. B. Clarke in Journ. Linn. Soc. xxi. 112. 
