Heterotheca horrida ContentDistribution Tipo de ambiente Distribution México (Country) native Tipo de ambiente No method for rendering unknown description class: SynonymyHeterotheca horrida (Rydb.) V.L. Harms in Wrightia 4(1): 17. 1968≡Chrysopsis horrida Rydb. in Bull. Torrey Bot. Club 31(12): 648-649. 1904