Stewartia I. Lawson. Stewartia, Wild Camellia.
A genus of about 20 species (if circumscribed to include Hartia), trees and shrubs, of temperate e. Asia and e. North America. Both our species of Stewartia are very attractive shrubs. The other species of the genus are Asian. Lin et al. (2019) show S. malacodendron as basal to the rest of the genus (if Hartia is included in Stewartia), and Stewartia ovata as basal to Stewartia s.s.; Li et al. (2002a) and Prince (2002) show different tree topologies and relationships.
ID notes: The leaves are borne in horizontal planes, reminiscent of Benthamidia (Cornus) florida and Swida (Cornus) alternifolia. The leaves of both species are obscurely serrate or crenate, and also conspicuously and copiously ciliate-margined.
Ref: Li et al. (2002a); Lin et al. (2019a); Prince (2002); Prince (2009) In Flora of North America Editorial Committee (2009); Spongberg (1974); Stevens, Dressler, & Weitzman In Kubitzki et al. (2004); Zhang et al. (2022). Show full citations.