26 C. B. CLarkeE: 
Cyperus Gardneri Nees in Mart. Fl. Bras. II pars 1 (1842) p. 34; 
cf. Boeck. in Linnaea XXXVI (1869— 70) p. 410 in nota. 
Oyperus corticatus ©. Wright in Sauv. Oub. (1871) n. 2570 p.171. 
Hab. in Cuba: C. Wright. 
Distrib. Pernambuco. 
_*21. Cyperus virens Mich. glaber, robustior, rhizomate brevi, 
obliquo; culmis 3—8 dm. lorgis; foliis cum ®/, parte culmi aequi- 
longis, 6—9 mm. latis, plus minus spongiosis, saepe conspicue trans- 
versim lineolatis; umbella polystachya, saepius composita umbellulis 
bracteatis; bracteis umbellam superantibus cum foliis aequilongis; spi- 
culis 8—20-nim fascieulatis, 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 1/,—?/, parte glumae aequilonga; stylo cum t/, parte 
nueis vix aequilongo, ramis 3 breviter extrusis. 
Oyperus virens Mich. Fl. Bor. Amer. I (1803) p. 28; Kunth 
Enum. II p. 40; Boeck.! in Linnaea XXXV (1867—68) p. 553. 
Oyperus vegetus A. Rich. in Sagra Fl. Cub. III p. 285? 
Oyperus surinamensis Griseb.! Pl. Oub. p. 237; Sauv.! Oub. 
n. 2578 p. 172. 
Hab. in Cuba: G, Wright n. 3357, 
Distrib. in America a Virginia usque ad Argentinam. 
Var. #. Brittoni ©. B. Clarke, evolutus, foliis vix spongiosis; um- 
bellae radiis 12 usque ad 8 cm. longis; spieulis usque ad 14 mm. longis. 
Oyperus 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. 
_ 222. Cyperus surinamensis Rottb. glaber, culmis 2—-6 dm. longis, 
gracilioribus; foliis 2—3 mm. latis, non transversim lineolatis; spieulis 
10 — 50-nim capitatis, admodum compressis, delicatulis, usque ad 11 mm. 
longis 2—3 mm. latis 30— 40-floris, flavescentibus nitidis vel fusces- 
centibus; glumis minute apieulatis; stamine 1; nuce cum !/, parte glu- 
mae aequilonga, ellipsoidea, trigona, apice pyramidali, ceteroquin fere 
ut ©. vörens. 
Oyperus surinamensis Rottb. Deser. et Ic. (1773) p. 35 t. 6 füg. 5; 
Kunth Enum. IT p. 43, syn. O. polycephalo Schrank exel.; Griseb.! 
Kar. p. 118, et Flor. p. 564; Boeck.! in Linnaca XXXV (1867— 68) 
p. 158; Duss Fl. (1897) p. 537. 
ie N formosus Vahl Enum. II (1806) p. 327; Kunth Enum. 
