TY - JOUR T1 - Self-incompatibility and myophily in Octomeria (Orchidaceae, Pleurothallidinae) species JF - Plant Systematics and Evolution Y1 - 2009 DO - 10.1007/s00606-009-0212-6 A1 - Barbosa, Ariane Raquel A1 - de Melo, Marcos Cabral A1 - Borba, Eduardo Leite SP - 1–8 KW - Mating systems KW - Myophily KW - Orchidaceae KW - Pleurothallidinae KW - Pollination KW - Self-incompatibility AB - Pleurothallidinae (ca. 4,000 spp.) is the largest myophilous group in Orchidaceae. Recently three self-compatible bird-pollinated genera were included at the base of the group, while Octomeria (plus Brachionidium ) is the sister group to the remaining subtribe in the former circumscription. Studies of reproductive biology of three Octomeria species were carried out to determine the occurrence of myophily and self-incompatibility in the genus, to help trace the evolution of these characteristics in the subtribe. The three species showed a strong self-incompatibility and are intercompatible. Octomeria crassifolia and O. grandiflora are pollinated by Sciaridae (Diptera) species, presenting high specificity. These results indicate that both self-incompatibility and myophily are basal characteristics in the former delimitation of the Pleurothallidinae and possibly have been kept in the derived lineages, representing biological synapomorphies of the group. L2 - 50415 L3 - 51855 VL - 283 UR - http://www.springerlink.com/content/h167mg18462q6hj0/abstract/ CP - 1-2 ER -