. Pycreus. | CLVI, CYPERACEE (CLARKE). 291 
. 5-10 nuts. Glumes ovate, obtuse, boat-shaped, inflated. Nut 3 the 
length of glume, ellipsoid, brown, transversely muriculate by reason of 
. the subpersistent ends of the small longitudinally-oblong persistent 
. cells. —P. lanceolutus, C. B. Clarke in Durand & Schinz, Conspect. Fl. 
. Afr. v. 538; Rendle in Cat. Afr. Pl. Welw. ii. 107, but not Cyperus 
lanceolatus, Poir. C. intermedius, Steud. in Flora, 1842, 581, and Syn. 
Pl. Glum. ii. 5; A. Rich. Tent. Fl. Abyss. ii. 483 (but erroneously 
placed in Hu-Cyperus); Boeck. in Linnea, xxxv. 450, excel. vars. 6, y. 
C. Eragrostis, Krauss in Flora, 1845, 754 in note, not of Vahl. 
C. lanceolatus, Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 125; Engl. 
Hochgebirgsfl. Trop. Afr. 138, not of Poiret. 
‘ Nile Land. Abyssinia: Tigre; near Jomara, Schimper, 1267! Begemeder, 
Schimper, 1243, 
Lower Guinea. Angola: Huilla; near Lopollo, Welwitsch, 6873! 
3. P. rehmannianus, (. B. Clarke in Durand d: Schinz, Conspect. 
_#l. Afr. v. 542, excluding several numbers cited. Roots fibrous. Stems 
tufted, up to 15 in. long, rather slender. Leaves 10 by 3-4 in. 
Umbel up to 4 in, in diam., simple, of 10-25 spikelets ; bracts 3, lowest 
4-8 in, long, similar to the leaves. Spikes of 3-10 loosely arranged 
‘Spikelets, ebracteolate, Spikelets $-3 by } in., much compressed, with 
parallel sides, 20-30-nutted, chestnut-brown. Glumes ovate, boat- 
‘shaped, obtuse, 1-nerved. Nut 4 the length of the glume, obovoid, 
compressed, white muriculate; outermost cells oblong, conspicuous.— 
C. B. Clarke in Dyer, Fl. Cap. vii. 156. Cyperus rehmannianus, Boeck. 
‘ex C. B. Clarke in Durand & Schinz, Conspect. FI. Afr. v. 542. 
i Mozamb. Dist. British Central Africa: Nyasaland; Mount Zomba, 4000—- 
* 6000 ft., Whyte ! 
Also in South Africa. 
The species was founded on Rehmann’s Transvaal plant ; Whyte’s specimens 
_*re much finer and more developed, but the brilliant small nut, much narrowed at 
- the base, is the same! 
4. P. debilissimus, (. B. Clarke in Journ. Bot. 1896, 224. 
» Annual, very slender, weak. Stems 3-6 in. long, capillary. Leaves 
few, nearly as long as the stem, setaceous, flaccid. Head 1, of 8 sub- 
Sessile spikelets; bracts 2, lower 2 in. long, similar to the leaves. 
Spikelets 2 by 54, in., 20-flowered, chestnut-brown, compressed, some- 
_ What turgid. Glumes ovate, obtuse, chestnut-coloured ; keel chestnut- 
brown. Nut nearly 4 the length of the glume, obovoid, nearly black ; 
outermost cells distinctly longitudinal. 
Wile Land. British East Africa : Tana River, Gregory, 87 ! 
- 5. P. pauper, C. B. Clarke in Durand d&: Schinz, Conspect. FI. 
4fr.v. 540. Annual, weak. Stems 4-7 in. long. Leaves as long as 
‘the stem, setaceous. Head 1, of 2-1 sessile spikelets; bracts 2, the 
-lower 2 in. long, erect, similar to the leaves. Spikelets 4-1 by $ in., 
4-10-flowered, compressed, turgid, yellow, with the upper margins of 
cthe glumes dark-brown. Glumes ovate, not acute, with 3 greenish 
‘erves on the back. Nut 4-4 the length of the glume, obovoid, black, 
