Figure 3.

Colour variation among the whole geographical range of T. sidoides ssp. pinnatifida, including pink, light orange and yellow phenotypes (black circles). Other T. sidoides subspecies (grey circles): (1) T. s. integrifolia, (2) T. s. holosericea and (3) T. s. carnea. Other Turneraceae (white circles): (1) T. grandiflora, (2) T. orientalis, (3) T. krapovickasii, (4) T. grandidentata and (5) Piriqueta morongii. The colour loci of their petal reflections are represented in the perceptual colour space of bees (RNL model; Vorobyev et al. 2001).