A monotypic genus, a shrub, endemic to the se. United States. Bardon et al. (2016) show with robust molecular sampling that “Licania michauxii” is sister to a complex group consisting of Couepia, Gaulettia, Afrolicania, Hirtella, and 3 additional clades of Licania. It seems best to acknowledge the evolutionarily isolated status of this species (estimated to have diverged from the larger clade in the Oligocene about 28 million years BP; Bardon et al. 2016) by placing it in the monotypic genus Geobalanus, as done by Small (1913b, 1933).
Ref: Bardon et al. (2016); Prance (1970); Prance (1972); Prance & Sothers (2003); Prance In Kubitzki (2014); Small (1913a); Small (1913b); Small (1933); Whetstone & Nixon (2016) In Flora of North America Editorial Committee (2016). Show full citations.