Fig. 3From: Ancillary polymorphic floral traits between two morphs adaptive to hawkmoth pollination in distylous plant Tirpitzia sinensis (Linaceae)Comparison of visits/flower/hour between honeybees, bumblebees and hawkmoths to S- and L-morphs. Bars sharing the same letters are not significantly different in visit rates among three visitor groups. The visit rates of hawkmoths to the S-morph are significantly higher than those to the L-morph (marked with black arrows)Back to article page