342 CLVI. CYPERACE# (CLARKE). [ Cyperus. 
Upper Guinea. Cameroons: Cameroon Mountain, 7000-10,000 ft., Mann, 
1358! 2107! Johnston, 46! and without precise locality, Preuss, 564! 571! 979! 
Fernando Po, 4000-7000 ft., Mann, 320! 1479! 
Lower Guinea. Island of St. Thomas, 5800 ft., Moller, 23! 
The present group of Cyperus is, in Tropical Africa, very difficult to divide into 
species. The above description is drawn from Mann, 1358, as a typical form; in 
this the stem is more than 8 feet high, and there are in the umbel more than 150 
spikes containing more than 600 spikelets. Mann, 2107, is a foot high, slender, 
one stem carrying only 6 spikes and 35 spikelets, and is referred by Boeckeler to 
C. leptocladus, Kunth; but was marked by Hooker, f. as “ = Mann, 1358,” with 
‘which determination I agree. 
53. C. Deckenii, Boeck. in Linnea, xxxviil. 361. Glumes strong, 
red-brown or chestnut-red, with a small recurved mucro. Nut } the 
length of the glume, narrowly ellipsoid to oblong; otherwise as C’. Mannu. 
.—Boeck. in Decken, Reisen Ost-Afr. Bot. 72; C. B. Clarke in Durand 
& Schinz, Conspect. Fl. Afr. v. 555; K. Schum. in Engl. Pfl. Ost-Afr. 
C. 119; Engl. Hochgebirgsfl. Trop. Afr. 141. (C. leptocladus, Oliver 
in Trans. Linn. Soc. ser. 2, Bot. ii. 353, not of Kunth. C. (Mariscus) 
clarkeanus, K. Schum. in Engl. Pfl. Ost-Afr. C. 123 (excl. syD.)- 
_C. zambesiensis, C. B. Clarke in Trans. Linn. Soc. ser. 2, Bot. iv. 53. 
C. sambesiensis, K. Schum. in Eng. Pil. Ost-Afr. C. 121. 
Mozamb. Dist. German East Africa : Kilimanjaro, 4900-8000 ft., Volkens, 
650! 652! 704! Johnston, 84! Kersten! Decken, 126! Meyer, 273! Taylor ! 
. British Central Africa: Nyasaland ; Mount Chiradzulu, Weller! Nyika Plateau, 
6000-7000 ft., Whyte! Mount Zomba, 4000-6000 ft., Whyte! Mount Malosa, 
4000-6000 ft.. Whyte! Shire Highlands, Scott-Elliot, 8488! Mount Mlanje, 
Whyte ! and without precise locality, Buchanan, 1001! 
The type form of this species has the umbel rather loose, the spikelets longer and 
darker-colonred than those of C, Mannii. As to the synonymy, the plant of 
Kersten marked Deckenii by Boeckeler, that of Volkens marked clarkeanus by 
Schumann, and that of Johnston marked leptocladus by Oliver (all three from 
the same level on Kilimanjaro) have been placed side by side and admitted to be 
_identical. Some of the Nyasaland material also appears identical ; but other Nyasa- 
land material, at present arranged as Deckenii, has very dense umbels, or paler 
or shorter spikelets, and may hereafter be separable. This plant in no wise approXl- 
mates to the genus Mariscus ; and it must have been by some error in ticketing that 
K. Schumann could have imagined that it was a Mariscus of mine. 
54, C. fischerianus, Schimper ex Hochst. in Flora, 1841, i. Intell. 21. 
Glumes more distant on the rhachilla, in fruit not or hardly overlapping, 
pale, thin in texture, at the top rounded, thin, often torn, the nerve 
hardly ever excurrent. Nut ovoid or somewhat obovoid, small ; other- 
wise as ('. Mannii and C. Deckenii.—A. Rich. Tent. Fl. Abyss. ii. 4885 
Boeck. in Linnea, xxxv. 582; C. B. Clarke in Durand & Schinz, Con- 
spect. Fl. Afr. v. 562; K. Schum. in Engl. Pfl. Ost-Afr. C. 120; Engl. 
Hochgebirgsfl. Trop. Afr. 140; Schweinf. in Bull. Herb. Boiss. 1. 
Append. ii. 103. 
Wile Land. Abyssinia: Mount Scholoda, Schimper, 348! Debra Eski, 8250 ft., 
Schimper, 160! Amman Eski, 6800 ft., Schimper, 533! and without precise locality, 
Schimper, 261! 1481! Parkyns! British East Africa: Butagu in Ruwenzor 
district, Scott-Elliot, 7979! 
