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.
Caltha dionaeifolia Caltha dioneaefolia is a dwarf perennial herb, with apparently seated pale yellow flowers with about seven stamens and two to three free carpels and leaves that are reminiscent of those of the Venus flytrap, but very small and with leaflike appendages on the leaf. "C. dioneaefolia" occurs in the southern Andes of Chili and Argentina, including on Tierra del Fuego.