WESTERN TROPICAL AMERICA. 177 
the two described plants may be but varieties of one species. The plant referred 
here by Hooker and Arnott, Bot. Beech. p. 311, under the name of Aneilema 
floribunda, is a very distinct species, described by Martens and Galeotti under 
the name of Z'radescantia filiformis. 
CYPERACER. 
871. Exzocuaris constricta, Roem. et Schult——Kunth, Enum. 2. p- 153.—Spica ovato-conica, 
brevior et crassior quam illa F. geniculate.—Guayaquil. 
872. Dicuromena ciliata, Vahl.—Kunth, Enum. 2. p. 276.—Panama. 
873. Hypotytrum pycnocephalum, sp. n., culmo triquetro, spicis numerosis capitato-congestis, 
involucro inzequaliter plurifoliato.—Island of Gorgona. 
Folia desunt. Culmi adest summitas rigida, triquetra, angulis scabris. Involucri folium exterius culmo 
continuum, ultrapedale, pollicem latum, rigidum, alterum paullo brevius, tertium semipedale, omnia subulato- 
acuminata, superne ad margines serrulato-scaberrima; quartum et quintum multo minora, subulata, basi 
breviter dilatata. Spicule ultra 30, densissime congestz, semipollicares, ovato-conice, multiflore. Squame 
undique imbricatee, obtusee vel retusee. Squamule carinate, anguste, squamis longiores. Stamina 2 (vel 
interdum abortientia?). Achznium lenticulari-turgidum, leve. Stylus longus, ad medium bifidus, basi 
persistente non dilatata. 
874. Scieria bracteata, Cav.—Kunth, Enum. 2. p. 345.—Isle of Taboga, Bay of Panama. 
- GRAMINER. 
875. Paspatum paniculatum, Linn.—Kunth, Enum. 1. p- 59.—Realejo. 
876. Oxyra latifolia, Linn.—Kunth, Enum. 1. p. 69.—Gulf of Fonseca. 
877. Panicum brevifolium, Linn.—P. trichodes, Sw.—Kunth, Enum. 1. p. 112. — Gulf of 
Fonseca. 
878. Serarta glauca, Beauy.—Kunth, Enum, 1. p. 149.—Central America. 
879. OpLIsMENUS Burmanni, Beauv.—Kunth, Enum. 1. p. 139,—Forma mollissime villosa.— 
Gulf of Fonseca. 
880. PENNISETUM purpurascens, Humb. et Kunth.—Kunth, Enum. 1. p. 160.—Acapulco. 
881. DacryLocrentum egyptiacum, Wild.—Kunth, Enum. 1. p. 261.—Gulf of Fonseca. 
882. EraGrostis, sp. near Poa tenax and P. aturensis, Humb. et Kunth (Kunth, Enum. I. p- 
327, 328), with dense panicles, a foot to a foot and a half long, and very numerous small shining 
flowers, about seven in each spikelet, but the leaves are wanting.—Conchagua. 
3A 
