410 CLVi. CYPERACE^ (clarke). [Eleocharis. 



11. E. ancepSy C. B. Clarke in Durand d; Schinz, Conspect. Fl. 

 Afr. V. 590. A glabrous annual. Stems tufted, 4-6 in. long, obscurely 

 flattened. Spikelet 4 in. long, subcylindric or narrow-ellipsoid, many- 

 flowered, yellow-green with dull red marks. Nut-bearing glumes in 

 many spirals, obtuse. Hypogynous bristles 0. Style-branches 3. Nut 

 hardly J the length of the glume, obovoid, only slightly narrowed 

 towards the truncate top, acutely 3-ribbed, smooth, white ; style-base 

 bulbous, rather large, | the width of the nut. — Rendle in Cat. Afr. PI. 

 Welw. a. 121. Ueleodiaris anceps Ridley in Trans. Linn. Soc. ser. 2, 

 Bot. ii. 148. 



XiO\irer Guinea. Angola : Pungo Andnngo ; damp sandy places on the banks 

 of the River Cuanza near Conda, Welwitsch, 6817 ! and in damp woods between 

 Mopopa and Sansamanda, fVelwitsch, 7170 ! 



12. E. Kirkii, C. B. Clarke. A glabrous annual. Stems tufted, 

 8—5 in. long. Spikelet ^ in. long, ellipsoid, pale obscure reddish, many- 

 flowered. Nut-bearing glumes in many spirals, obtuse. Hypogynous 

 bristles 7, longer than the nut, retrorse-scabrid, rusty brown. Style- 

 branches 3. Nut J the length of the glume, trigonous, obovoid, slightly 

 narrowed at the truncate top, pallid, smooth ; style-base subglobose, 

 straw-coloured, of loose tissue. 



XVZozaxnl). Dist. British Central Africa : on an island in the River Zambesi 

 at Victoria Falls, Kirk ! 



13. E. microcarpa, Torrey in Ann. Lyceum New York, iii. (1836), 

 ;'>12. A glabrous annual. Stems tufted, 4-8 in. long, slender. Spikelet 

 \-\ in. long, 10-20-flowered, pale brown-green. Nut-bearing glumes 

 in many spirals, ovate, obtuse. Hypogynous bristles 3-5, J-f the 

 length of the nut, retrorsely hispid, white. Style-branches 3. Nut 

 scarcely J the length of the glume, trigonous, obovoid, narrowed at the 

 top to half its width, smooth, straw-coloured or brown ; style-base 

 ovoid, J the width of the nut, concolorous with it. — C. B. Clarke in 

 Durand & Schinz, Conspect. Fl. Afr. v. 599 ; Urban, Symb. Antill ii. 71. 

 Heleocharis microcarpa, Boeck. in Linnsea, xxxvi. 439. H. schweinfur- 

 thiana, Boeck. in Flora, 1879, 562. 



irile Xiaud. British East Africa : Jur ; Jur Ghattas, Schweinfurih, 1949 ! 

 Also in America, scattered from New York to Peruambuco. 



14. E. marginulata, Steud. Syn. PI. Glum., ii. 78. Glabrous. 

 Rhizome woody. Stems 1-2 ft. long, subterete. Spikelet \ in. long, 

 dense, pale reddish-green, sometimes proliferous at the base. Nut- 

 bearing glumes in many spirals, ovate, obtuse. Hypogynous bristles 6, 

 •| the length of the nut, retrorse-scabrous, pale rusty-brown. Style- 

 branches 3. Nut less than J the length of the glume, trigonous, 

 obovoid, much narrowed at the top, yellow, or greenish ; style-base 

 small, conic, pallid. — C. B. Clarke in Durand k Schinz, Conspect. Fl. 

 Afr.v. 598. E. striata, Hocbst. ex Steud. Syn. PI. Glum. ii. 78. E. limosa, 

 A. Rich. Tent.Fl. Abyss, ii. 496, not of Schultes. Heleocharis marginulata, 

 JBoeck. in Linnsea, xxxvi. 457 ; Engl. Hochgebirgsfl. Trop. Afr. 149. 



