306 CLvi. CYPERACE.E (clarke). [Pycreus. 



Quibinda, Sansamanda, and Quitaje ad Cuije, Welwitsch, 6907 partly ! on islands at 

 the cataract of the River Cuanza, near Coiido, Welwitsch, 6938 ! 



South Central. Congo Free State : Bangala, Hens, 35 ! 



IMCozaml). I>ist. Portuguese East Africa : Quilimane, Stuhlmann, 78 ! 

 British Central Africa : Nyasaland ; Shire Highlands, Buchanan, 62 ! plains of 

 Zoraba, 2500-3000 ft., Whyte ! 



Also in the Mascarene Isles, India and Australia. 



34. P. tremulus, C. B. Clarke in Duraivd <k 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 J in. Spikelets 

 J-| by j?y in., 14-20-flowered. Nut scarcely -^^ in, long; otherwise 

 resembling P. alhomarginaius (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 Linnaea, xxxv. 469, and in Peters, 

 Reise Mossamb. Bot. 535; K. Schum. in Engl. Pfl. Ost-Afr. C. 117. 

 C. chloi'ostachys, Boeck. in Peters, Reise Mossamb. Bot. 540, and in 

 Linnaea, xxxvi. 293; K. Schum. in Engl. Pfl. Ost-Afr. C. 120. 



ITile ]Land. British E;ist Africa : Uganda, Stuhlmann, 4610! 



South Central. Equatorville, 1000 ft.. Hens, C, 358 ! 



AXozamb. Sist. Mozambique, Pe^e?-5, 22 ! British Central Africa : Nyasalandj 

 Kondowe to Karongn, 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 

 5-30-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 

 crested. 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. piistalatus branches sometimes 3. Nut 

 oblong or ellipsoid, triangular, the anterior angle flattened, smooth. — 

 Cjjperus, Benth. et Hook. f. Gen. PI. 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 . . . . . 2. J. pustulatus. 



Spikes congested into 1 dense compound head of many 



spikelets . . . . . . . . 3. J", pygmaus. 



Spike solitary, of 1-30 spikelets. 



Rootstock woody. Spikelets ^ in. broad, straw- 

 coloured . . . . . . . . 4. J". Icevigatus. 



Very snail annual. Spikelets ^q in. broad . . 5. J. minutus. 



I 



