Palicourea guianensis and P. marcgravii have inflorescences and flowers with bright coloration. Their flowers are tubular hummingbird pollinated but they are visited by butterflies too. These flowers have sweet odour and their corolla tube colored when treated with neutral red. It's possible to be a case of mixed pollination syndrome or representvestiges of a scented ancestry in phylogenetic lineage.
Floral odour; ornithophily; Palicourea; Rubiaceae