[4] Emilia fosbergii has been collected in many places for many years, the specimens regarded as belonging to E. coccinia, E. sagittata, or E. javanica.

A reexamination of a large number of specimens led Nicolson to recognize it as a distinct species in 1975.

Its region of origin is the subject of some dispute; some say it is native to Africa, while others say Asia or South America.

[6][7][8] It is reportedly naturalized in scattered locations in the United States, including Puerto Rico, and the Virgin Islands.

[6][9] Emilia fosbergii is an annual herb, growing up to 100 cm (40 inches) tall.