Do both Butea and Calanthe have just two species?
Calanthe Calanthe – commonly abbreviated Cal. in horticulture – is a widespread genus of terrestrial orchids (family Orchidaceae) with some 200 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.