''Rhaphiodon echinus'' is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the family Lamiaceae,

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to eastern

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. It is the only known species in the genus ''Rhaphiodon'', first described as a plant genus in 1844.Kew World Checklist of Selected Plant Families
/ref>Vásquez, G.D. & Harley, R.M. (2004). Flora de Grão-Mogol, Minas Gerais: Labiatae. Boletim de Botânica da Universidade de São Paulo 22: 193-204.

References

Lamiaceae Endemic flora of Brazil Plants described in 1823 {{Lamiaceae-stub