Fig. 7.

Maximum likelihood tree based on the complete plastome sequences of 32 representatives of Asteraceae including species of Robinsonia, Dendrosenecio and Senecio. Numbers above nodes are bootstrap values with 1000 replicates. Trait characters are marked with brown circle representing woody stem; blue, separate nodes spacing, typically thin-walled, chlorophyllous leaf sponge mesophyll, and one secretory canal per vascular bundle; and orange, nearly contiguous nodes, thick-walled, strongly hypodermis-like mesophyll, and two secretory canals. Trait data taken from Skottsberg (1921) and Carlquist (1974) [1, 26], but not available for R. saxatilis