Fig. 1.

Physiological chlorosis distribution in anurans evolved multiple times. Phylogenetic tree of anurans (16) showing ancestral character state reconstructions for physiological chlorosis (circular display). Chlorotic species are found in 11 anuran families in which it evolved independently. Shaded in blue are those families where chlorosis evolved at least once during their evolutionary history. In the lower section, a detailed topology shows that chlorosis evolved at least 11 times within the hylid subfamily Hylinae. Numbers refer to the tribes: (1) Cophomantini (2) Sphaenorhynchini (3) Scinaxini (4) Pseudini (5) Dendropsophini (6) Lophyohylini (7) Hylini.