Nighttime (starting 1 hr before sunset) floral volatile production of 24 Schiedea species. Species (columns) are clustered by scent similarity, with growth form, habitat, breeding system, and pollination indicated. Individual volatile compounds (rows) are grouped by WPGMA hierarchical clustering analysis of Bray-Curtis distances (dendrogram, right). Purple color intensity is proportional to log emission rate per open flower per hour (n=104 plants, 1-19 plants per species).
Now the species are arranged by the phylogenetic relationships in Willyard et al. 2011 (nuclear BEST species tree).