Heliopsis filifolia is a rare species of flowering plant in the family Asteraceae. It has been found only in the state of Coahuila in northern Mexico.Article: El género Heliopsis (Heliantheae; Asteraceae) en México y las alcamidas presentes en sus raíces, Journal: Acta Botánica Mexicana 2004 (69:115-131), Authors: | Abraham García | Enrique Ramírez | Jorge Molina | in Spanish with English summary; color photos of leaves of several species on page 119, photos of achenes on page 120Watson, Sereno. 1890. Proceedings of the American Academy of Arts and Sciences 25: 153
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External links Photo of herbarium specimen at Missouri Botanical Garden, collected in Coahuila in 1889, isotype of Heliopsis filifolia