Romanoa tamnoides
Romanoa tamnoides is a species of plant of the family Euphorbiaceae. It is the sole species in the monotypic genus Romanoa, first described in 1824. It is native to Brazil and Paraguay.
;VarietiesRomanoa tamnoides var. sinuata Radcl.-Sm. - BahiaRomanoa tamnoides var. tamnoides - Paraguay, SE Brazil
The genus name Romanoa is also used for a fungus.