Supplemental data for: Classification of the Celastrales based on integration of genomic, morphological, and Sanger-sequence characters

We present the best sampled phylogenetic analysis of Celastrales, with
respect to both character and taxon sampling, and use it to present a
natural classification of the order.  Parnassiaceae are highly
supported as sister to Celastraceae; we recognize both families as
distinct. Pottingeria is highly supported as a member of an early derived
lineage within Celastraceae.  We recognize and circumscribe 13
subfamilies in Celastraceae, including the new subfamilies
Crossopetaloideae, Maytenoideae, Microtropioideae, Monimopetaloideae, and
Salaciopsioideae. We identified five genera that likely require generic
recircumscriptions: Cassine, Elachyptera, Gymnosporia, Salacia, and
Semialarium.  Genera that had not been previously sampled in
Sanger-sequence-based studies are resolved as follows: Arnicratea is
sister to Reissantia, Bequaertia is in a clade with Campylostemon and
Tristemonanthus, Goniodiscus is sister to Wilczekra, Ptelidium is nested
within Elaeodendron, and Tetrasiphon is most closely related to Gyminda.