156 C. B. Clarke: 



Hab. in Trinidad: Broadway n. 3723 (ad Chaguanas), Crueger, 



Fendler n. 886, Hart n. 2219, Lockhart n. 293. 



Distrib. Ouiana. 



Obs. Species a C. fragifera vix sat diversa. 



XXIII. Uncinia Pers. 



Flores 1-sexuales. Prophylli bicarinati margines connati, pi- 

 stillutn nudum in utriculo amplectentes. Spiculae axeos rudimentum 

 in utriculo setiforme, ex utriculi ore exsertum, apice uncinatum. 



Species 26, praesertim in zona australi obviae; in Australia cum 

 Nova Zeelandia, in insulis Oceanicis australibus, in America australi 

 temperata ad Mexico et Jamaica extensae. 



234. Uncinia jamaicensis Pers. stolonifera, culmis 3 6 dm. 

 longis, monostachyis; foliis culmum saepe superantibus, 3 mm. latis; 

 spica 1 dm. longa, 3 4 mm. lata, continua, subtereti; bracteis foemi- 

 neis oblongis, remotiuscule imbricatis; utriculis lanceolatis, hispidulis, 

 bracteas parum superantibus; stylo 3-fido; nuce oblonga; seta (spiculae 

 axeos rudimento) quam utriculus duplo longiore, curvata, proventu di- 

 varicata. 



Uncinia jamaicensis Pers. Syn. II (1807) p. 534; Kunth Enum. 

 II />. 525; Griseh. Flor. p. 581; Boeck. in Linnaea v. 41 (1877) p. 347 

 (syn. U. mexicana excl). 



Carex uncinata Schkuhr Riedgr. I (1804) p. 13 t. 6, fig. 30, non 

 Linn. 



Carex hamata Swartx Prod. (1788) p. 18; Schlmhr Biedgr. II p. 31. 



Carex jamaicensis Poir. Encyc. Suppl. III (1813) p. 282 in nota. 



Hab. in Jamaica: Hart n. 2010, Shakespear, Stokes. 



Distrib. America centralis, Nova Oranata, Venezuela, Brasilia, Ar- 

 gentina. 



XXIV. Carex Linn. 



Flores 1-sexuales. Prophylli bicarinati margines connati, pistil- 

 luni nudum in utriculo amplectentes. Spiculae axeos rudimentum in 

 utriculo nullum. 



Species 1300, per orbem terrarum in humidioribus vulgatae. 



Clavis specierum antillanarum. 



Subgenus I. Vignea. Stylus 2-fidus. 



Spicae androgynae, terminalis basi mascula 



235. C. echinata Murray. 

 Subgenus II. Eu-Carex. Stylus 3-fidus. 



Spicae ovoideae aut oblongae, terminalis apice mascula basi foeminea 



