Euphorbia evolution and taxonomy

Walker, Colin (2022). Euphorbia evolution and taxonomy. CactusWorld, 40(4) pp. 299–300.


Euphorbia is the largest genus of succulents with around 800 species of its c. 2,000 species being succulent. Recent molecular studies have provided evidence that Euphorbia is a very diverse but unified genus because a number of smaller genera actually belong within it. Wei et al. (2021a) provide the strongest supporting evidence to date confirming Euphorbia as a single hyperdiverse genus.
Wei et al. (2021b) provide additional support for this expanded, unified concept of a hyperdiverse Euphorbia but focus on a very small group of just 14 species belonging to the former separate genus Synadenium.

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