Cyperaceae. 99 



saepe albae aut cinnamomeae. Bracteae caput superantes, angustae, 

 basi dilatatae saepe plus minus albicantes. 



Species 13, in America calidiore sparsae. 



Obs. Genus a Bynchospora Sect. Psilocarya non nisi differt spiculis 

 capitatis, saepe stramineis vel cinnamomeis, nuces paucas (1 3) maturan- 

 tibus; forsan cum cl. Boeckeler in Rynchospora potius mergendum. 



Clavis specierum antillanarum. 



* Bracteae basi glabrae. 



Bracteae 3 5 basi albescentes, patulo-deflexae 



131. D. leucocephala Mich. 

 Bracteae 2, oblique erectae . . 132. D. seslerioides C. B. Clarke. 

 ** Bracteae basi (saepe minute) ciliato - pilosae. 



y Nux transversim conspicue undulato-lineata 

 Nucis lineae transversales paucae 



133. D.pubera Vahl. 

 Nucis lineae transversales numerosae tenues 



Spiculae albae subspicatim capitatae 



134. D. ciliata Yahl. 

 Spiculae 1 5, sessiles 



Culmi filiformes; spiculae albae 



135. D. filiformis C. B. Clarke. 

 Culmi graciles; spiculae cinnamomeae 



136. D. radicans Schlecht. et Cham. 

 ff Nux levis, vix obscure transversim lineata 



137. D. Grisebachii C. B. Clarke. 



131. Dichromena leucocepliala Mich. glabra, stolonibus tenui- 

 bus, elongatis, a squamis striatis fusce stramineis intectis; culmis 3 5 dm. 

 longis; foliis cum 2 /s parte culmi aequilongis, angustis; bracteis 3 5, 

 usque ad 8 cm. longis, basi glabris dilatatis quam intus tam extra albes- 

 centibus; spiculis 8 16, dense capitatis, 6 8 mm. iongis, 8 15- 

 glumis, 3 1-nucigeris; glumis 5 mm. longis, ovato-triangularibus, ob- 

 tusis, albis; stylo longo, ramis 2 longis; nuce cum */ 4 parte glumae 

 aequilonga, late obovoidea, compressa, a lineis crebris horizontalibus 

 undulata; rostro cum J / 2 parte nucis aequilongo. 



Dickromena leucocephala Mich. Fl. Bor. Amer. I (1803) p. 37; 

 Kunth Enum. II p. 275. 



Dichromena colorata Hitchc. Pl. Bahamas (1893) p. 141 quoad 

 tab. Sloanei 78 fig. 1. 



Schoenus stellatus Lam. Encyc. I (1784) p. 741; Swartx Prodr. 

 p. 19 et Fl. Ind. Occid. I p. 102. 



Schoenus coloratus IAnn. Sp. Pl. ed. II p. 64 partim; cf. Bocclc. 

 in Linnaea XXXV (186768) p. 428 in nota. 



Rhynchospora stellata Oriseb.! Kar. (1857) p. 123 et Ftor.p. 576 

 et Pl. Cub. p. 247; Sauv.f Cub. n. 2696 p. 185. 



