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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Heliantheae
Subtribus: Zinniinae
Genus: Heliopsis
Species: H. annua – H. anomala – H. buphthalmoides – H. decumbens – H. filifolia – H. gracilis – H. helianthoides – H. lanceolata – H. longipes – H. novogaliciana – H. parviceps – H. parvifolia – H. procumbens – H. sinaloensis – H. suffruticosa
Name

Heliopsis Pers., Syn. Pl. 2: 473. Sep. 1807, nom. cons.

Type species: Heliopsis helianthoides (L.) Sw., typ. cons.

Synonyms

Heterotypic
Andrieuxia DC., Prodr. 5: 559. 1836.
Callais Cass., Diet. Sc. Nat. 24: 327. 1822.
Helenomoium Willd., ex DC. Prodr. 5: 551. 1836.
Helemonium Steud.
Helepta Raf., Neogynt. 3: 1825.
Hemolepis E.Vilm.
Kallias Cass.
Nemolepis E.Vilm.

References

Fisher, T.R. 1957. Taxonomy of the genus Heliopsis (Compositae). Ohio J. Sci. 57: 171–191.

Links

Farr, E. R. & Zijlstra, G. eds. (1996-) Index Nominum Genericorum (Plantarum). 2009 Aug 02 [1].
International Plant Names Index. 2018. Heliopsis. Published online. Accessed: Feb. 13 2018.
Govaerts, R. et al. 2021. Heliopsis in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Feb. 13. Reference page.
Tropicos.org 2018. Heliopsis. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Feb. 13.
Hassler, M. 2018. Heliopsis. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 Feb. 13. Reference page.

Vernacular names
suomi: Päivänsilmät
հայերեն: Արևաչք
русский: Гелиопсис

Heliopsis is a genus of herbaceous flowering plants in the sunflower family,[2][3] native to dry prairies in North and South America.[4] The sunflower-like composite flowerheads are usually yellow, up to 8 cm (3 in) in diameter, and are borne in summer. Species are commonly called ox-eye or oxeye.[5]

The name Heliopsis (pronounced /ˌhiːliˈɒpsɪs/, from Greek helios for "sun" and opsis for "appearance") 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:[6][1]

Heliopsis annua – Zacatecas, Oaxaca, Coahuila, Michoacán, Querétaro, Guanajuato, Nuevo León, Puebla, México State, Hidalgo, San Luis Potosí
Heliopsis anomala – Baja California Sur
Heliopsis buphthalmoides (synonym Heliopsis canescens) – Chiapas, Oaxaca, Panama, Honduras, Costa Rica, Guatemala, Colombia, Ecuador, Venezuela, Peru, Bolivia
Heliopsis decumbens – Peru
Heliopsis filifolia – Coahuila
Heliopsis gracilis – smooth oxeye, pinewoods oxeye – southeastern and south-central United States[7]
Heliopsis helianthoides – smooth oxeye, false sunflower, oxeye, rough oxeye[8] – most of eastern and central USA and Canada[9]
Heliopsis lanceolata – Colombia
Heliopsis longipes – gold root – San Luis Potosí
Heliopsis novogaliciana – Jalisco, Durango, Sinaloa
Heliopsis parviceps – Guerrero
Heliopsis parvifolia – mountain oxeye – northern Mexico, southwestern United States[10]
Heliopsis procumbens – Durango, Jalisco, Mexico State, Distrito Federal, Sinaloa
Heliopsis sinaloensis – Sinaloa
Heliopsis suffruticosa – Zacatecas[11]

References

The Plant List search for Heliopsis
Persoon, Christiaan Hendrik. 1807. Synopsis plantarum,seu Enchiridium botanicum, complectens enumerationem systematicam specierum hucusque cognitarum 2: 473 in Latin
Sunset Western Garden Book, 1995:606–607
Tropicos, Heliopsis Pers.
RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
Smith, Alan R. (2006). "Heliopsis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 21. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Smith, Alan R. (2006). "Heliopsis gracilis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 21. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
"Heliopsis helianthoides". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 10 January 2018.
"Heliopsis". Natural Resources Conservation Service PLANTS Database. USDA.
Smith, Alan R. (2006). "Heliopsis parvifolia". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 21. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Ramírez -Noya, David; González-Elizondo, Socorro; Molina -Torres, Jorge (2011-10-01). "Heliopsis suffruticosa (Compositae, Heliantheae), una nueva especie del occidente de Zacatecas". Acta Botánica Mexicana (97): 39–47. ISSN 0187-7151.

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