406 CLVI, CYPERACEX (CLARKE). | Eleocharis. 
yellow-brown. Style-branches 3 or 2. Nut 4-2 the length of the 
glume, biconvex or unequally trigonous, smooth, brown, neither ribbed 
nor transversely barred.—Kunth, Enum. li, 153; Benth. FI. Austral. 
‘vil. 292 in obs. ;.C. B. Clarke in Hook. f. Fl. Brit. Ind. vi. 625, and in 
Durand & Schinz, Conspect. Fl. Afr. v. 600; Rendle in Cat. Afr. Pl. 
Welw. ii.121. Scirpus plantaginoides, Rottb. Descr. et Ic. 45, t. 15, fig. 
2. Heleocharis plantaginea, Boeck. in Linnea, xxxvi. 474, excl. the 
description and the American plants; Ridley in Trans. Linn. Soc. ser. 2, 
Bot. ii. 149 partly. 
Lower Guinea. Angola: Huilla; ponds by the river Caco!ovar, near Lake 
Ivantala, Welwitsch, 6968 ! 
In the Mascarene Isles, South and East Asia (common), Queensland and 
Polynesia. 
2. E. mitrata, var. africana, ('. B. Clarke in Durand & Schinz, 
Conspect. Fl. Afr. v. 599. Glabrous. Stolons long, hardly ;}; in. in 
diam. Stems 12-18 in. long, ;/, in. in diam., nearly terete, not —_ 
versely septate. Spikelet 1,1 by } in., greyish-green. Glumes }—} in. 
long, ovate, obtuse. Hypogynous bristles 7, about half the length of 
the nut, white, nearly smooth. Style 2-fid. Nut 4 the length of the 
glume, biconvex, almost urn-shaped, dirty straw-coloured ; superficial 
cells transversely oblong, superposed in 24—30 vertical series (i.e. nut 
cancellate) ; style-base almost mitre-shaped.—Urban, Symb. Antill. 
i. 62. 
Upper Guinea. Niger Territory: Nupe, Barter, 1040! 
Also in Tropical America ? 
The typical FE. mitrata (i.e. Scirpus mitratus, Griseb.) has the spikelets more - 
less variegated with red; and the hypogynous bristles yet more depauperate ; 
Barter n. 1040 may be esteemed a geographical variety or a closely allied species. 
3. E. fistulosa, Link in Sprengel, Jahrb. iii. 78. Glabrous. Stolons 
long, 1-1 in. in diam. Stems 1-3 ft. long, }-} in. in diam., at the top 
triquetrous, not transversely septate. Spikelet 1, 1-1} by b-5 in., from 
straw-colour to brown. Glumes $—t in. long, obovate, obtuse. Hype 
bristles 6, as long as the nut, retrorse-scabrid, rusty-red. Style-branc <i 
3, or, according to authors, sometimes 2. Nut 4 the length of iri 
glume, obovoid, unequally trigonous, straw-coloured ; superficial cc 
transversely oblong, superposed in 24-30 vertical series (i.e. nut a 
cellate) ; style-base ovoid-conic, chestnut-coloured.—Kunth, Lane ; 
155; C. B. Clarke in Hook. f. Fl. Brit. Ind. vi. 626, in phates 
Schinz, Conspect. Fl. Afr. v. 598, and in Dyer, Fl. Cap. vil. ee 
Rendle in Cat. Afr. Pl. Welw. ii. 121. Z. acutangula and E. if 7 ’ 
Schultes in Roem. & Schultes, Syst. Veg. ii. Mant. 91. Scirpus fistulo il: 
Poir. in Lam. Encyel. vi. 749.  Heleocharis fistulosa, Boeck. in ae ray 
xxxvi. 472, and in Flora, 1879, 563; K. Schum. in Engl. Pf. Ost- ve 
v. 124. H. plantaginea, Ridley in Trans. Linn. Soc. ser. 2, Bot. 11. 
partly. 
Upper Guinea. Senegambia, Heudelot, 320! Senegal, Perr He 
Cape Verd, Perrottet! Sierra Leone: Bagru River, Mann, 893! French G 
