26 C. B. Clarke: 



Cyperus Gardneri Nees in Hart. Fl. Bras. II pars 1 (1842) p. 34; 

 cf. Boeck. in Linnaea XXXVI (1869 70) p. 410 in nota. 



Cyperus corticatus C. Wright in Sauv. Cuh. (1871) n. 2570 p. 171. 

 Hab. in Cuba: C. "Wright. 

 Distrib. Pernambuco. 



21. Cyperus rireiis Mich, glaber, robustior, rhizomate brevi, 

 obliquo; cuhnis 3 8 dm. longis; foliis cum Y^ parte culmi aequi- 

 longis, 6 9 mm. latis, plus minus spongiosis, saepe conspicue trans- 

 versim lineolatis; umbella polystachya, saepius composita umbellulis 

 bracteatis; bracteis umbellani superantibus cum foliis aequilongis; spi- 

 culis 8 20-nim fasciculatis , usque ad 12 mm. longis, 3 4 mm. latis, 

 viridibus; glumis navicularibus, ovali-oblongis, obtusis, 3-nerviis, ob 

 cellulas laxas lucidis; stamine 1, laterali; nuce ellipsoidea, trigona, apice 

 lanceolata, cum Y2 V5 P^i'te glumae aequilonga; stylo cum Y2 parte 

 nucis vix aequilongo, ramis 3 breviter extrusis. 



Cyperus virens Mich. Fl. Bor. fuer. I (1803) p. 28; Kunth 

 Efium. II p. 40; Boeck! in Linnaea XXXV (186768) p. 553. 



Cyperus vegetus A. Rieh, in Sagra Fl. Cuh. III p. 285? 



Cyperus surinatnensis Griseh.! PI. Cuh. p. 237; Sauv.! Cub. 

 n. 2578 p. 172. 



Hab. in Cuba: C. Wright n. 3357. 



Distrib. in America a Virginia usque ad Argentinam. 



Var. . Brittoiii C. B. Clarke, evolutus, foliis vix spongiosis; um- 

 bellae radiis 12 usque ad 8 cm. longis; spiculis usque ad 14 mm. longis. 

 Cyperus virens Britton! in Bull. Torrey Club XIII (1886) p. 208. 

 Cyperus vegetus Pursh Fl. Amer. Sept. I (1814) p. 51; non Willd. 

 Hab. in Guadeloupe: l'Herminier n. 44. 

 Distrib. Florida. 



22. Cyperus surinamensis Rottb. glaber, culmis 2 6 dm. longis, 

 gracilioribus; foliis 2 3 mm. latis, non transversim lineolatis; spiculis 



10 50-nim capitatis, admodum compressis, delicatuiis, usque ad 11 mm. 

 longis 2 3 mm. latis 30 40-floris, flavescentibus nitidis vel fusces- 

 centibus; glumis minute apiculatis; stamine 1; nuce cum Y2 parte glu- 

 mae aequilonga, ellipsoidea, trigona, apice pyramidali, ceteroquin fere 

 ut C. virens. 



Cype7'us surinamensis Rotth. Descr. et Ic. (1773) p. 35 t. 6 fig. 5; 

 Kunth Enum. II p. 43, syn. C. p)olycephalo Schrank excl.; Griseh.! 

 Kar. p. 118, et Flor. p. 564; Boeck.! in Linnaea XXXV (186768) 

 p. 158; Duss Fl. (1897) p. 537. 



Cyperus formosus Vahl Enum. II (1806) p. 327 ; lumth Enum. 



11 p. 41. 



