58 C. B. CLARKE: 
Oyperus ornithopus Pers. Syn. I (1805) p. 61. 
Oyperus Havanensis Kunth Enum. II (1837 ) p. 84; Griseb.! 
Pl. Oub. p. 237; Boeck. in Linnaea XXAXVI (1869—70) p. 870; 
Sauwv. Oub. n. 2595 p. 172; Willd. ms. ex Kunth. 
Cyperus unifolius Boeck.! in Linnaea XXXVI (1869— 7 0) 
2. 374. 
Epiphystis ophiuroides Trin. Fund. (1820) p. 98 1.1. 
Mariseus filiformis Roem. et Sch. Syst. II (1817) p. 242 partim 
et Mant. p. 140. 
Mariscus Havanensis H. B. K. Nov. Gen. et Sp. I (1815) p. 212. 
Hab. in ins. Bahama, New Providence: Eggers n. 4412; Cuba: 
Liebmann, Linden (Santiago) n. 2068, (Cobre) n. 2069, Rugel n. 879, 
C. Wright n. 3362, n. 702 (foliis longis, umbella 2—3-radiata); Jamaica: 
Hart n. 1502, March, Purdie; Hispaniola: Picarda n. 359, 585, Poiteau 
n. 45; Portorico: Sintenis n. 841, 3353, 3471, 3817®; St. Thomas: 
Eggers n. 36; St. Croix: Raven. . 
VII. Eleocharis R. Br. 
Glumae plurimae aut numerosae, 3- aut multi-spirae, obtusae 
aut vix acutae; ima obtusa’saepissime vacua caeteris non aut vix longior. 
Flos imus 2-sexualis, nucem maturans. Setae hypogynae 3—8, cum 
nuce saepe aequilongae retrorsim scabridae, vel raro nullae. Stamina 
3—1, antica. Stylus glaber; rami 3 aut 2, lineares; styli basis dila- 
tata, pyramidalis, bulbosa aut conica, a nueis apice facile (praeter E. 
rostellatam) distinguenda. Nux trigona aut plano-convexa, sessilis, an- 
guste vel late obovoidea; stylus in nuce persistens. — Culmus glaber, 
aphyllus, monostachyus. 
Species 120, per orbem terrarum sparsae, in America copiosae. 
Clavis specierum antillanarum. 
Subgenus I. Limnochloa (genus) Nees in Wight Contrib. (1834) p. 114, non 
Lestib. Stoloniferae. Culmi robustiores. Spieula longius cylindrica. 
Glumae rigidiores, plano-concavae, vix carinatae, stramineae, virides 
aut fuscae, fere unicolores. 
Culmi (im sieco) conspicue transversim (pseudo-)septati 
: 68. E. interstineta R. Br. 
Culmi non (aut admodum obscure) septati 
Culmi apice triquetri aut acutius trigoni 
; | 69. E. mutata R. Br. 
Culmi apice teretes aut obscure subtrigoni 
Setae leves vel vix denticulatae 
Nux apice truncata; setae breves 70. E. mitrata ©. B. Clarke. 
Nux apice angustata; setaelongae 71. E. cellulosa Torrey. 
Setae valide retrorsim scabrae 72. E. variegata Presl var. 
