''Isocarpha microcephala'' is a New World species of plants in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

. It has been found only in

Perú , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy fo ...

and

Ecuador Ecuador ( ; ; Quechuan languages, Quechua: ''Ikwayur''; Shuar language, Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechuan ...

.David J. Keil & Tod F. Stuessy. 1981. Systematics of ''Isocarpha'' (Compositae: Eupatorieae). Systematic Botany (1981) 6(3): pp. 258-287
descriptions, line drawings, distribution maps for all 5 species ''Isocarpha microcephala'' is an annual or perennial herb up to 100 cm (40 inches) tall. Leaves are up to 7 cm (2.8 inches) long. One plant produces several flower heads, each head with 80-140 white, pink, or purple disc flowers but no ray flowers.

References

Eupatorieae Flora of Peru Flora of Ecuador Plants described in 1836 {{Eupatorieae-stub