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Simplified phylogeny of the Agavoideae, with estimated topology and mean divergence times from McKain et al. (2016), and aridification timing based on Eronen et al. (2012). Bolded taxa names are the species/genera included in this study. Tips are labelled according to photosynthetic pathway as described by previous work (Heyduk et al., 2016b, 2018b, 2019b), and yellow stars indicate hypothesised origins of Crassulacean acid metabolism photosynthesis.
