482 CLVi. CYPERACE^ (clarke). [liynckosjyora. 



Enum. ii. 278. Sclerla pygmcea, Nees in Flora, 1828, 332, not of 

 Spreng. 



Upper Guinea. Isert ! 



Also in Tencriffe and Tropical America. 



7. R. Barteriy C. B. Clarke xnDiirand & Schinz, Gonspect. Fl. Afr. 

 V. 653. Glabrous. Roots fibrous. Stems 8 in. long, very slender, 

 with nodes and leaves (or bracts) throughout their length. Leaves 

 4-6 by yV in. Corymbs about 3, distant, of 3-5 small pallid spikelets, 

 V-J in. in diam. Spikelets i in. long, ovoid-lanceolate, each perfecting 

 i-2 nuts. Glumes ovate, thie 3 lowest empty and minutely mucronate. 

 Style longer than the nut ; branches 2, slender, longer than the style. 

 Nut broadly ovoid, biconvex, hardly J the length of the glume, nearly 

 sessile, smooth, brown ; style-base depressed conic, much narrower 

 than the nut. 



Upper Grvilnea. Niger Territory : Nupe, Barter, 1010 ! 



This species differs little from B. divergens, Brittou, which, with several closely 

 allied species, is plentiful in the South United States and West Indies ; but I have 

 not been able to match R. Barteri with any American plant. 



8. R. glauca, Vahl, Enum. ii. 233. Glabrous. Rhizome very 

 short, horizontal. Stems 1-2 J ft. long, rather slender, with nodes and 

 leaves (or bracts) throughout its length. Leaves 8-12 by i in. 

 Panicle compound, oblong (sometimes reduced to a quasi-terminal con- 

 tracted corymb), often 8 by 2 in., with distant lower peduncles carrying 

 20-40 spikelets each ; peduncles and pedicels suberect. Spikelets ^-i 

 in. long, ovoid, subacute, chestnut-brown, each perfecting 1 or 2 nuts. 

 Hypogynous bristles 6, about as long as the nut, brown, with upward- 

 pointing teeth. Style about as long as the nut ; branches 2, longer 

 than the style. Nut J-§ the length of the glume, broadly-ellipsoid, 

 biconvex, chestnut-brown, obscurely transversely wrinkled by wavy 

 lines ; style-base J the length of the nut, depressed conic. — C. B. 

 Clarke in Hook, f, Fl. Brit. Ind. vi. 671, in Durand & Schinz, Conspect. 

 Fl. Afr. V. 654, and in Dyer, Fl. Cap. vii. 268 ; Urban, Symb. Antill. 

 ii. 128. Rhyyichospora gljiuca, Roem. & Schultes, Syst. Veg. ii. 85; 

 Kunth, Enum. ii. 297 excl. several synonyms ; Boeck. in Linnaea, 

 xxxvii. 585. R. laxa, R. Br. Prod. 230 ; Kunth, Enum. ii. 298 ; Coss. 

 & Durieu, Expl. Scient. Alger. Glum. 239. 



IMCozaxxib. ]Dist> British Central Africa : Nyasaland ; Mount Zomba, 4000- 

 6000 It., TFhyte I 



Common in neirly all tropical and warm temperate regions, except Tropical 

 Africa. 



Imperfectly known species. 



9. R, senegalensis, Steud. Syn. PI. Glum. ii. 149 suh Rhyncho- 

 spord. Stem above 1 ft. long, triquetrous, smooth, bearing leaves. 

 Iieaves shorter than the internode, narrowly lanceolate, 1-2 by |^ in., 

 smooth. Corymb terminal, 1 or 2 axillary corymbs sometimes added. 



