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Evolution and homology of bird pollination syndromes in Erythrina (Leguminosae)
American Journal of Botany
Erythrina L. (Leguminosae: Phaseoleae) is a pantropical genus of over 100 species, all of which are either hummingbird or passerine pollinated. Phylogenetic hypotheses based on morphological and chloroplast DNA restriction site characters suggest that shifts from passerine to hummingbird pollination have occurred a minimum of four times in the genus. In hummingbird-pollinated species the inflorescences are held upright, the flowers are arranged radially along the axis, and the narrow standarddoi:10.2307/2445883 fatcat:xkpd6bov5zhvnmsvtkpk6uo4ie