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.
Calanthe fargesii Calanthe fargesii is a species of plant in the Orchidaceae family. It is endemic to China (Chongqing, Gansu, Guizhou, and Sichuan provinces). Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests.