@article{article966ec738,
title   = {Lip anatomy and its implications for the pollination mechanisms of Bulbophyllum species (Orchidaceae)},
author = {Teixeira, Simone de Pádua and Borba, Eduardo Leite and Semir, João},
year = {2004},
doi = {10.1093/aob/mch072},
journal   = {Annals of Botany}
}