306 CLVI. CYPERACEH (CLARKE). | Pycreus. 
Quibinda, Sansamanda, and Quitaje ad Cuije, Welwitsch, 6907 partly! on islands at 
the cataract of the River Cuanza, near Condo, Welwitsch, 6938 ! 
South Central. Congo Free State: Bangala, Hens, 35! 
Mozamb. Dist. Portuguese East Africa: Quilimane, Stuhimann, 78! 
British Central Africa: Nyasaland; Shire Highlands, Buchanan, 62! plains of 
Zomba, 2500-3000 ft., Whyte ! 
Also in the Mascarene Isles, India and Australia. 
34. P. tremulus, (. B. Clarke in Durand & Schinz, Conspect. Fl. 
Afr. v. 542. A large annual. Stem solitary, 1-3 ft. high, triquetrous 
at the top, smooth. Umbel usually compound, with very numerous 
spikelets ; bracts 4—7, lowest often exceeding 12 by } in. Spikelets 
4-2 by {}, in., 14-20-flowered. Nut scarcely 1, in. long; otherwise 
resembling P. albomarginatus (differing in the slender spikelets).— 
C. B. Clarke in Journ. Bot. 1897,72; Durand & Schinz, Etudes Fl 
Congo, i. 282. Cyperus tremulus, Poir. in Lam. Encycl. vii. 264; 
Kunth, Enum. ii. 16; Boeck. in Linnea, xxxv. 469, and in Peters, 
Reise Mossamb. Bot. 535; K.Schum. in Engl. Pfl. Ost-Afr. C. 117. 
(. chlorostachys, Boeck. in Peters, Reise Mossamb. Bot. 540, and in 
Linnea, xxxvi, 293; K. Schum. in Engl. Pfl. Ost-Afr. C. 120. 
Nile Land. British East Africa : Uganda, Stuhlmann, 4610! 
South Central. Equatorville, 1000 ft., Hens, C, 358! ° 
Mozamb. Dist. Mozambique, Peters, 22! British Central Africa : Nyasaland ; 
Kondowe to Karonga, 2000-6000 ft., Whyte ! 
Also in the Mascarene Islands. 
3. JUNCELLUS, C. B. Clarke in Hook. f. Fl. Ind. vi. 594. 
Spikes umbelled or congested into a head or solitary. Spikelets 
5-80-flowered ; glumes distichous, 2 lowest empty, several succeeding 
bisexual, perfecting nuts and deciduous seriatim from the lowest; 
rhachilla persistent. Stamens 3-1, anterior; anthers oblong, not 
erested. Style passing continuously into the ovary, not bulbous at the 
base; branches 2, linear, in a plane at right angles to the median 
plane of the spikelet, or in J. pustulatus branches sometimes 3. Nut 
oblong or ellipsoid, triangular, the anterior angle flattened, smooth.— 
Cyperus, Benth. et Hook. f. Gen. Pl. iii. 1043 partly. 
Differs from Cyperus only in having the style 2-fid, not 3-fid. 
Species 12, scattered through nearly all warm and temperate regions. 
Spikes umbelled. 
Spikes numerous, cylindric, of very many spikelets . 1. J. alopecuroides. 
Spikes few, of 2-5 spikelets . : 5 . 2. J. pustulatus. 
Spikes congested into 1 dense compound head of many 
spikelets . . se : : . 3. SJ. pygmaeus. 
Spike solitary, of 1-30 spikelets. 
Rootstock woody. Spikelets 4 in. broad, straw- 
coloured . : : : : : : . 4, J, levigatus. 
Very small annual, Spikelets 3, in. broad. . 5. J. minutus. 
