Pycreus. | CLVI. CYPERACEZ (CLARKE). 299 
so, Spikelets numerous, loosely spicate, ferruginous, up to # by} in. ; 
otherwise as P. polystachyos, Beauy. var. lawiflora.—C. B. Clarke’ in 
Durand & Schinz, Conspect. Fl. Afr. v. 536, and in Dyer, Fl. Cap. vii. 
158; Urban, Symb. Antill. ii. 18. Cyperus ferrugineus, Poir. in Lam. 
Encycl. vii. 261; Kunth, Enum. ii. 11; K. Schum. in Engl. Pfl. Ost- 
Afr. C.118, C. polystachyos, var. ferrugineus, Boeck. in Linnea, xxxv. 
479, 
.  acieomaeg Dist. German East Africa; Karagwe; Bukoba, Stuhlmann, 
468 ! : 
Also in South Africa, the Mascarene Isles, and South-east Asia; also in the 
United States and Tropical America, if Cyperus Nuttallii, C. Sprengel, be con- 
sidered =the Madagascar Cyperus ferrugineus, Poiret. 
This plant altogether resembles P. polystachyos, var. laxiflora, except that its 
spikelets (glumes and nuts) are larger and brighter. 
19. P. Hildebrandtii, (. B. Clarke in Durand & Schinz, Conspect. 
Fl. Afr. v. 538. Roots fibrous. Stems 1 ft. long, rather stout.., 
Leaves 3 the length of the stem, up to } in. broad. Umbel compound ; ' 
primary rays 7, slender, 24 in. long; lowest bract up to ’5 by } in, 
Secondary umbels often of | 3 very slender rays hardly } in. long,: 
ebracteolate. Spikes loose, of 7-20 spikelets. Spikelets 3-2 by 20-18, 
in., 10-30-flowered, bright brown; glumes rather distant, minute.— 
Cyperus polystachyos, var. micans, partly, C. B. Clarke in Journ. Linn. 
Soc. xxi. 54. ‘C. Hildebrandtii, K. Schum. in Engl. Pf. Ost-Afr. 
C. 118, not of Boeck. : 
Wile Land. British East Africa : Ozi, Gregory ! Rabai Hills, near Mombasa, 
Taylor ! : 
Mozamb. Dist. Zanzibar, Hildebrandt, 1071! : 
This and the preceding 4 species may be treated as extreme forms of P. poly-— 
stachyos, Beauv. P. Hildebrandtii, with its strong development and compound 
umbel, yet with excessively narrow spikelets and capillary rays, appears’ as distinct 
as any of the preceding 4. 
20. P. globosus, Aeichd. var. nilagirica, C. B. Clarke in Durand 
¢& Schinz, Conspect. Fl. Afr. v. 537. Stolons 0. Stems 1-2 ft. long, 
annual or biennial, tufted. Leaves % the length of the stem, rarely 
exceeding } in. in breadth, much enrolled in all the dried examples. 
Umbel 1-6 in. in diam., simple or compound, or one compound head ; 
bracts 3-5, lowest overtopping the inflorescence, similar to the leaves. 
Spikelets loosely spicate, 4-2 by ,—75 in., strongly compressed, from 
shining dark brown to nearly: black, 8—30-flowered, with parallel sides, 
Glumes rigid, ovate, scarcely acute. Nut } the length of the glume, 
ellipsoid, apiculate, nearly black, superficial cells small, quadrate.— 
P. capillaris, var. nilagirica, C. B. Clarke in Hook. f. Fl. Brit. Ind. vi. 
592. Cyperus nilagiricus, Hochst. ex Steud. Syn. Pl. Glum, ees 
Boeck. in Linnea, xxxv. 457. C. globosus, Boeck. in Flora, 1879, 
546; K. Schum. in Engl. Pfl. Ost-Afr. C. 117. C. polystachyos, var. 
Jerruginea, C. B, Clarke in Journ. Linn. Soe. xxi. 54 partly. : 
Upper Guinea. French Guinea: Farana, near the sources of the Niger, 
