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 Aynehospora Sect. Psilocarya non nisi differt spieulis 
capitatis, saepe stramineis vel cinnamomeis, nuces paucas (L—3) maturan- 
tibus; forsan cum el. BoECKELER in Aynchospora potius mergendum. 
Clavis specierum antillanarum. 
* Bracteae basi glabrae. 
Bracteae 3—5 basi albescentes, patulo-deflexae 
131. D. leueocephala Mich. 
Bracteae 2, oblique erectae. . 132. D, seslerioides C. B. Clarke. 
”* Bracteae basi (saepe minute) ciliato -pilosae, 
f Nux transversim conspicue undulato-lineata 
Nucis lineae transversales paucae 
133. D. pubera Vahl. 
Nucis lineae transversales numerosae tenues 
Spiculae albae subspicatim capitatae 
134. D. eiliata Vahl. 
Spiculae 1—5, sessiles 
Culmi filiformes; spiculae albae 
135. D. filiformis C. B. Clarke. 
Culmi graciles; spieulae cinnamomeae 
136. .D. radieans Schlecht. et Cham. 
rr Nux levis, vix obscure transversim lineata 
137. D. Grisebachü C. B. Clarke. 
131. Diehromena leueocephala Mich. glabra, stolonibus tenui- 
bus, elongatis, a squamis striatis fusce stramineis intectis; culmis 3— 5 dm. 
longis; foliis cum ?/, 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. longis, 8S—15- 
glumis, 3—1-nucigeris; glumis 5 mm. longis, ovato-triangularibus, ob- 
tusis, albis; stylo longo, ramis 2 longis; nuce cum !/, parte glumae 
aequilonga, late obovoidea, compressa, a lineis crebris horizontalibus 
undulata; rostro cum !/, parte nucis aequilongo. 
Dichromena leucocephala Mich. Fl. Bor. Amer. I (1803) p. 37; 
Kunth Enum. II p. 275. 
Dichromena colorata Hitche. Pl. Bahamas (1893) p. 141 quoad 
tab. Sloanei 78 fig. 1. 
Schoenus stellatus Lam. Eneye. I (1784) p. 741; Swartx Prodr. 
p.19 et Fl. Ind. Occid. I p. 102. 
Schoenus coloratus Linn. Sp. Pl. ed. II p. 64 partim; ef. Boeck. 
in Linnaea XXXV (1867—68) p. 428 in nota. 
Rhynchospora stellata Griseb.! Kar. (1857) p. 123 et Flor. p. 576 
et Pl. Cub. p. 247; Sawv.! Cub. n. 2696 p. 185. 
7* 
