Heliopsis
Heliopsis is a genus of herbaceous flowering plants in the family Asteraceae, native to dry prairies in North and South America. The sunflower-like composite flowerheads are usually yellow, up to in diameter, and are borne in summer. Species are commonly called ox-eye or oxeye.
The name Heliopsis refers to the bright yellow color of the flowers.
Species are found widely in cultivation in temperate climates, notably varieties of H. helianthoides.
Species
There are about 18 species, including:Heliopsis annua – Zacatecas, Oaxaca, Coahuila, Michoacán, Querétaro, Guanajuato, Nuevo León, Puebla, México State, Hidalgo, San Luis PotosíHeliopsis anomala – Baja California SurHeliopsis buphthalmoides – Chiapas, Oaxaca, Panama, Honduras, Costa Rica, Guatemala, Colombia, Ecuador, Venezuela, Peru, BoliviaHeliopsis decumbens – PeruHeliopsis filifolia – CoahuilaHeliopsis gracilis – smooth oxeye, pinewoods oxeye – southeastern and south-central United StatesHeliopsis helianthoides – smooth oxeye, false sunflower, oxeye, rough oxeye – most of eastern and central USA and CanadaHeliopsis lanceolata – Colombia Heliopsis longipes – gold root – San Luis PotosíHeliopsis novogaliciana – Jalisco, Durango, SinaloaHeliopsis parviceps – GuerreroHeliopsis parvifolia – mountain oxeye – northern Mexico, southwestern United StatesHeliopsis procumbens – Durango, Jalisco, Mexico State, Distrito Federal, SinaloaHeliopsis sinaloensis – SinaloaHeliopsis suffruticosa – Zacatecas