Do both Butea and Calanthe have just two species?
Butea Butea is a genus of flowering plants belonging to the pea family, Fabaceae. It is sometimes considered to have only two species, "B. monosperma" and "B. superba", or is expanded to include four or five species.
Caloplaca digitaurea Caloplaca digitaurea is a species of lichen in the family Teloschistaceae. Found in Chile, it was described as new to science in 2011.