1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



37 



69. Xyris lacerata Pohl ex Seubert in Martins, Fl. Bras. 3 1 : 216. pi. 26. 1855. 

 Type. Goias, Brazil, Pohl. 



Distribution. Widely distributed, Colombia and Venezuela to Peru and central 

 Brazil, to alt. 1500 m. Common in Guayana usually in savannas at low altitudes. 

 Venezuelan records follow. VENEZUELA. Bolivar: Ciudad Piar, Maguire, 

 Wurdack & Bunting 35834; Hato la Vergarena, Rio Chiguirete, 11 Oct 1954, 

 Wurdack & Guppy 20; morichal east of Rio Orinoco, between Rio Horeda and 

 Cerro Gavilan, Wurdack & Monachino 39951, 39952. Amazonas : Esmeralda, Tate 

 184 (NY), 263 (NY), Croizat 115 (NY, VEN), Steyermark 57865 (NY); 

 Sanariapo, Steyermark 58474 (NY). 



70. Xyris subglabrata Malme, Bull. Torrey Club 58 : 322. 1931. 



Type. In swampy ground, Grand Savanna, alt. 325 ft, Esmeralda, Amazonas, 

 Venezuela, G. H. H. Tate 303 (holotype NY). 



Distribution. Known only by the type collection. 



71. Xyris paraensis Poeppig in Kunth, Enum. Plant. 4 : 9. 1843. 



Type. Para, Brazil, Poeppig (B, syntype, US photo no. 5758). 

 Distribution. British Guiana, Suriname (Tafelberg, Maguire 24203), Ama- 

 zonas and Para, Brazil. 



72. Xyris savanensis Miquel, Linnaea 18: 605. 1844. 

 Type. Suriname, Focke 1022. 



Distribution. Widespread as a wet savanna plant, Colombia and Venezuela to 

 Peru, southern Brazil, Paraguay, and northern Argentina. In Guayana common 

 in savannas at low altitudes, occasionally to 1200 m. 



BROMELIACEAE 8 



Pitcairnia caricifolia var. macrantha L. B. Smith, var. nov. 



Florif era 9 dm alta ; bracteis florigeris pedicellis infimis aequantibus, quam 

 reliquis brevioribus ; sepalis acutis, 27 mm longis, rubro-aurantiacis ; petalis 6 cm 

 longis, ligula bidentata praeditis. 



Type. Terrestrial, locally abundant on shaded rocky banks of black-water cano 

 from Cerro Aracamuni on left bank of Rio Siapa just above Raudal Gallineta 

 (about 115 river km from mouth), alt. 130-140 m, Amazonas, Venezuela, 23 Jul 

 1959, J. J. Wurdack & L. S. Adderley 43601 (holotype US). 



The flowers of var. macrantha are much larger than those of the typical 

 variety and the floral bracts are relatively smaller. 



Pitcairnia patentiflora var. armata L. B. Smith, var. nov. 



Florif era 2 m alta ; f oliis 14 dm longis, laminis 4 cm latis, basin versus paulo 

 angustatis, omnino laxe serrulatis ; sepalis ad 27 mm longis. 



Type. Terrestrial, locally occasional in scrub forest on sandstone dome on 

 right bank of Rio Siapa just below Raudal Gallineta (about 110 river km from 



s By Lyman B. Smith. 



