Borreria secc. pseudodiodia (rubiaceae), aportes taxonómicos y palinológicos
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Instituto de Botánica del Nordeste
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Se actualiza la taxonomía de la sección Pseudodiodia Hassl. del género Borreria G. Mey., en la cual se incluían hasta ahora seis especies. En este trabajo se agregan cuatro especies a la sección, elevando el número a un total de diez taxones: dos de las Islas Galápagos (B. suberecta Hook. f. y B. dispersa Hook. f.) y dos continentales, de Brasil (B. decipiens K. Schum. y B. tocantinsiana E. L. Cabral & Bacigalupo). Se examinaron los granos de polen de esas especies mediante microscopio óptico y microscopio electrónico de barrido. Las especies continentales presentan el polen característico de Pseudodiodia (colpos largos y exina tectado-espinulosa), mientras que el polen producido por las especies insulares presenta variaciones en la exina.
Taxonomy and palynology of the genus Borreria G. Mey. section Pseudodiodia Hassl. are updated. Four species are added to the section, three of them are described and illustrated, raising to ten the number of taxa included in it. Two of them live in Galapagos (B. suberecta Hook. f. and B. dispersa Hook. f.) and the other (B. decipiens K. Schum. and B. tocantinsiana E.L. Cabral & Bacigalupo) grow in Brazil. Pollen grains of these species were examined with light and scanning electron microscopy. The continental species present the typical pollen characteristics of Pseudodiodia (long colpi and tectatespinulate exine), whereas pollen produced by species living in Galapagos have variations in the exine.
Taxonomy and palynology of the genus Borreria G. Mey. section Pseudodiodia Hassl. are updated. Four species are added to the section, three of them are described and illustrated, raising to ten the number of taxa included in it. Two of them live in Galapagos (B. suberecta Hook. f. and B. dispersa Hook. f.) and the other (B. decipiens K. Schum. and B. tocantinsiana E.L. Cabral & Bacigalupo) grow in Brazil. Pollen grains of these species were examined with light and scanning electron microscopy. The continental species present the typical pollen characteristics of Pseudodiodia (long colpi and tectatespinulate exine), whereas pollen produced by species living in Galapagos have variations in the exine.
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Cabral, Elsa Leonor, Mari, Eliana Karina Alejandra y Pire, Stella Maris, 2006. Borreria secc. pseudodiodia (rubiaceae), aportes taxonómicos y palinológicos. Bonplandia. Corrientes: Instituto de Botánica del Nordeste, vol. 15, no. 1-2, p. 79-90. E-ISSN 1853-8460. http://dx.doi.org/10.30972/bon.151-296
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