Data from: Employing hypothesis testing and data from multiple genomic compartments to resolve recalcitrant backbone nodes in Goodenia s.l. (Goodeniaceae)

Goodeniaceae is a primarily Australian flowering plant family with a
complex taxonomy and evolutionary history. Previous phylogenetic analyses
have successfully resolved the backbone topology of the largest clade in
the family, Goodenia s.l., but have failed to clarify relationships within
the species-rich and enigmatic Goodenia clade C, a prerequisite for
taxonomic revision of the group. We used genome skimming to retrieve
sequences for chloroplast, mitochondrial, and nuclear markers for 24 taxa
representing Goodenia s.l., with a particular focus on Goodenia clade C.
We performed extensive hypothesis tests to explore incongruence in clade C
and evaluate statistical support for clades within this group, using
datasets from all three genomic compartments. The mitochondrial dataset is
comparable to the chloroplast dataset in providing resolution within
Goodenia clade C, though backbone support values within this clade remain
low. The hypothesis tests provided an additional, complementary means of
evaluating support for clades. We propose that the major subclades of
Goodenia clade C (C1–C3 + Verreauxia) are the result of a rapid radiation,
and each represents a distinct lineage.