Resumen

RODRIGUEZ R., Leyda  y  SANOJA, Elio. REPRODUCTIVE BIOLOGY ASPECTS OF ERISMA UNCINATUM WARM., (VOCHYSIACEAE), THE FIRST TIMBER-YIELDING SPECIES OF BOLÍVAR STATE, VENEZUELA.. Acta Bot. Venez. [online]. 2004, vol.27, n.1, pp.23-33. ISSN 0084-5906.

Aspects of reproductive strategy as floral biology, pollination and pollen:ovule ratios of Erisma uncinatum Warm.(mureíllo) were studied in order to increase the knowledge for the management and conservation of this Venezuelan forestry species. The study was carried out in the Imataca Forestry Reservoir, Delta Amacuro and Bolívar States border, in a secondary forest portion. Flowering ocurrs between November and December. The inflorescences are terminal and tyrse like. The flowers are asimetrics and enantiostylous. This morphologic features and others like color, odor, nectar and diurnal antesis are related with a bee pollination syndrome. The flowers are visited, mainly, by Anthophoridae and Apidae bee species. The high pollen:ovule ratio and floral morphology suggest an outbreeding strategy.

Palabras clave : Erisma; enantiostily; bee pollination; mureíllo; timber species; Vochysiaceae; Guayana.