1) When did Mitthyridium and lineages within evolve?
2) How do these nodal age estimates (at both deep and shallow splits in the phylogeny) compare with island ages?
3) Does the rate of population divergence change? (numbers of distinctive lineages per unit time; noticeable through faster evolving genes, described below)
4) Is this rate change coincident with a loss is dispersability (or perhaps some other feature)?
These questions are predicated on the availability of data about phylogeny,
biogeography and time (specifically, 1-5 listed in "Diversification").
Thus, a brief description of Mitthyridium's taxonomy, geographic
distribution, and use as a model system for addressing the theoretical