Genetic and morphological variation in the Bulbophyllum exaltatum (Orchidaceae) complex occurring in the Brazilian “Campos Rupestres”: implications for taxonomy and biogeography

Bulbophyllum Thouars is a pantropical genus. It is one of the most species-rich genera of the Orchidaceae, with ca. 1.200 species (Dressler 1993). The genus pre- sents myophily (pollination by Diptera) as pollination syndrome. Because orchid species are mainly self- compatible, we expect that fly-po...

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Bibliographic Details
Published inLankesteriana Vol. 7; no. 1-2
Main Authors Ribeiro, Patricia Luz, Borba, Eduardo, Smidt, Eric, Lambert, S.M., Selbach-Schnadelbach, A, Van der Berg, Cassio
Format Journal Article
LanguageEnglish
Spanish
Published Cartago Universidad de Costa Rica 2007
Subjects
Biogeography
Bulbophyllum
Gene flow
Genera
Genetic diversity
Orchidaceae
Plant reproduction
Pollination
Population genetics
Populations
Species
Taxonomy
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Summary:Bulbophyllum Thouars is a pantropical genus. It is one of the most species-rich genera of the Orchidaceae, with ca. 1.200 species (Dressler 1993). The genus pre- sents myophily (pollination by Diptera) as pollination syndrome. Because orchid species are mainly self- compatible, we expect that fly-pollinated orchids pre- sent low variability within the populations and high genetic differentiation among conspecific populations, due to the reduction of the gene flow (Borba & Semir 1998, Borba et al. 2001). This could help to explain the high number of species in genera of fly-pollinated orchids, most of them with restricted distribution. 
ISSN:1409-3871
2215-2067
DOI:10.15517/lank.v7i1-2.18446