Subdivisions of the genus Oenothera in the Onagraceae (evening primrose) family:Oenothera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07Onagraceae Wagner, W.L et al. Revised Classification of the Onagraceae (2007)
Section Anogra Oenothera sect. Angora – western North America in dry, sandy soils in deserts, grasslands, and forest openings, up to 2000 m. elevation.
Oenothera arizonica – California evening primrose (Arizona & Mexico) Oenothera avita – California evening primrose O. avita ssp. avita O. avita ssp. californica O. avita ssp. eurekensis – Eureka Dunes evening primrose Oenothera deltoides – birdcage evening primrose O. deltoides ssp. ambigua O. deltoides ssp. cognata O. deltoides ssp. deltoides O. deltoides ssp. howellii ( - Antioch Dunes evening primrose O. deltoides ssp. piperi Oenothera engelmannii – Engelmann's evening primrose (south-central U.S.) Oenothera neomexicana – New Mexico evening primrose (Arizona, New Mexico) Oenothera nuttallii – Nuttall's evening primrose (central North America) Oenothera pallida – pale evening primrose, white buttercup (western North America) O. pallida ssp. gypsophila – whitepole evening primrose O. pallida ssp. pallida O. pallida ssp. runcinata O. pallida ssp. trichocalyx Oenothera wigginsii – (Baja California in Mexico)O. wigginsii North Carolina State University Herbarium 2011-12-07
Section Calylophus Oenothera sect. Calylophus – in North American Great Plains and south to central Mexico.
subsect. Calylophus
Oenothera berlandieri – Mexican evening primroseO. berlandieri University of Arizona Pima County Cooperative Extension. 2011-12-07 O. berlandieri ssp. berlandieri O. berlandieri ssp. pinifolia Oenothera serrulata – yellow sundrops
subsect. Salpingia
Oenothera hartwegii – Hartweg's sundrops O. hartwegii ssp. fendleri O. hartwegii ssp. filifolia O. hartwegii ssp. hartwegii O. hartwegii ssp. maccartii O. hartwegii ssp. pubescens Oenothera lavandulifolia – lavenderleaf sundrops Oenothera toumeyi – Toumey's sundrops Oenothera tubicula – Texas sundrops O. tubicula ssp. strigulosa O. tubicula ssp. tubicula
Section Contortae Oenothera sect. Contortae – Sierra Nevadas of California, extending just into western Nevada.O. xylocarpa Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07
Oenothera xylocarpa – woodyfruit evening primrose
Section Eremia Oenothera sect. Eremia – western North America, with a distribution in the Chihuahuan, Mojave, and Sonoran deserts.O. sect. Eremia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-06
Oenothera primiveris – desert evening primrose O. primiveris ssp. bufonis – large yellow desert primroseO. primiveris ssp. bufonis Calflora: Information on California plants for education, research and conservation 2011-12-09 O. primiveris ssp. primiveris
Section Gaura Oenothera sect. Gaura – beeblossom (includes most of the taxa formerly placed in genus Gaura)Common Names The Integrated Taxonomic Information System (ITIS) 2011-12-13
subsect. Campogaura
Oenothera boquillensis – Rio Grande beeblossom (Texas & Mexico) Oenothera suffrutescens – scarlet beeblossom (western North America)
subsect. Gaura
Oenothera coloradensis (Nebraska, Wyoming, Colorado, New Mexico) O. coloradensis ssp. coloradensis – Colorado beeblossom or butterfly plant O. coloradensis ssp. neomexicana – New Mexico beeblossom Oenothera demareei – Demaree's beeblossom Oenothera filiformis – biennial gauraO. filiformis University of Michigan Herbarium. 2011-12-07 Oenothera gaura – (eastern North America, from Ontario to South Carolina and Minnesota to Missouri) Oenothera hexandra O. hexandra ssp. gracilis O. hexandra ssp. hexandra Oenothera lindheimeri Oenothera patriciae Oenothera simulans Oenothera suffulta O. suffulta ssp. suffulta O. suffulta ssp. nealleyi Oenothera triangulata
subsect. Gauridium
Oenothera anomala – anomalous Oenothera (Mexico)
subsect. Schizocarya
Oenothera curtiflora – lizard tail (North America)
subsect. Stenosiphon
Oenothera glaucifolia – false gaura (southern Great Plains of central North America)
subsect. Stipogaura
Oenothera calcicola Oenothera cinerea – gaura-pilosa O. cinerea ssp. cinerea O. cinerea ssp. parksii Oenothera filipes Oenothera mckelveyae Oenothera sinuosa – wavy-leaf gaura
subsect. Xenogaura
Oenothera xenogaura – (southern North America)
subsect. Xerogaura
Oenothera arida – (Texas, Mexico)
Section Gauropsis Oenothera sect. Gauropsis – Wyoming, western Nebraska, eastern Colorado, New Mexico, Kansas and the Texas Panhandle in the U.S. High Plains.O. sect. Gauropsis Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-09
Oenothera canescens – spotted evening primrose
Section Hartmannia Oenothera sect. Hartmannia – Generally in Mexico, Arizona, and Texas. But O. speciosa extends into the U.S. Central Plains, and O. rosea extends to the Caribbean, and northern South America.O. sect. Hartmannia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-09
Oenothera deserticola – (Mexico)O. deserticola Tropicos.org. Missouri Botanical Garden. 2011-12-09 Oenothera platanorum – Fort Huachuca evening primrose Oenothera rosea – pink evening primrose, Rose of Mexico Oenothera speciosa – showy evening primrose, Mexican primrose, amapola Oenothera texensis – Texas evening primrose
Section Kleinia Oenothera sect. Kleinia – distributed over the Chihuahuan, Sonoran, and southern portions of the Great Basin deserts to the Great Plains, from southern Utah to southeastern Montana and western North Dakota, and northern Mexico.O. sect. Kleinia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
Oenothera albicaulis – prairie evening-primroseO. albicaulis Tropicos.org. Missouri Botanical Garden 2011-12-09 Oenothera coronopifolia O. coronopifolia Tropicos.org. Missouri Botanical Garden 2011-12-09
Section Kneiffia Oenothera sect. Kneiffia – eastern North America, at elevations up to 1900 m.O. sect. Kneiffia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
Oenothera fruticosa – narrow-leaved or southern sundrops (eastern North America)O. fruticosa Tropicos.org. Missouri Botanical Garden. 2011-12-09 O. fruticosa ssp. fruticosa – (more southern distribution) O. fruticosa ssp. glauca – (more northern distribution) Oenothera perennis – little evening primrose, perennial sundrops (North America)O. perennis Tropicos.org. Missouri Botanical Garden. 2011-12-09 Oenothera pilosella – prairie sundrops, meadow evening primroseO. pilosella Prairie Wildflowers of Illinois 2011-12-08 O. pilosella ssp. pilosella – (eastern North America) O. pilosella ssp. sessilis – () Oenothera riparia – riverbank sundropsRichard Dwight Porcher & Douglas Alan Rayner: A guide to the wildflowers of South Carolina, p.292 (2001)O. riparia Tropicos.org. Missouri Botanical Garden. 2011-12-11 Oenothera spachiana – Spach's evening-primrose ()O. spachiana Lady Bird Johnson Wildflower Center, Native Plant Database 2011-12-11
Section Lavauxia Oenothera sect. Lavauxia – North and South America.
subsect. Australis
Oenothera acaulis − (Chile)O. acaulis Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07 Oenothera centaurifolia − (Uruguay, Brazil, Argentina)O. centauriifolia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-07O. centaurifolia Tropicos.org. Missouri Botanical Garden 2011-12-09
subsect. Lavauxia
Oenothera acutissima – Flaming Gorge evening primrose (Utah, Colorado) Oenothera flava – yellow evening primrose (west & central North America) O. flava ssp. flava O. flava ssp. taraxacoides Oenothera triloba – stemless evening primrose (North America)
Section Leucocoryne Oenothera sect. Leucocoryne – from southern Texas, through northern Mexico to the Trans-Volcanic Belt of central Mexico, southward to Guatemala, Nicaragua, and Costa Rica.
Oenothera dissecta - (Chihuahuan Desert)O. dissecta Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09 Oenothera kunthiana - (southern Texas to Costa Rica)O. kunthiana Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09 Oenothera luciae-julianiae - (Mexico) Oenothera orizabae - (Mexico) Oenothera tetraptera - (Mexico, southern Texas)O. tetraptera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
Section Megapterium Oenothera sect. Megapterium – distributed in south-central North America.
Oenothera brachycarpa – short-fruit evening primrose () Oenothera howardii – Howard's evening primrose () Oenothera macrocarpa – Missouri or big-fruit evening primroseO. macrocarpa Tropicos.org. Missouri Botanical Garden. 2011-12-09 O. macrocarpa ssp. fremontii – Fremont's evening primrose () O. macrocarpa ssp. incana – big-fruit evening primrose () O. macrocarpa ssp. macrocarpa – big-fruit evening primrose () O. macrocarpa ssp. mexicana – (Mexico) O. macrocarpa ssp. oklahomensis – Oklahoma evening primrose ()
Section Oenothera Oenothera sect. Oenothera – distributed from Canada to Panama.O. sect. Oenothera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-08
subsect. Candela
Oenothera clelandii – Cleland's evening primroseO. clelandii Prairie Wildflowers of Illinois 2011-12-08 Oenothera curtissii – Curtiss' evening primrose () Oenothera heterophylla – variable-leaf evening primrose O. heterophylla ssp. heterophylla – () O. heterophylla ssp. orientalis – () Oenothera rhombipetala
subsect. Emersonia
Oenothera macrosceles – (Chihuahuan Desert) Oenothera maysillesii – (Durango) Oenothera organensis – (New Mexico) Oenothera stubbei – (Nuevo León)
subsect. Munzia
series Allochroa
Oenothera affinis – (Bolivia, Brazil, Chile) Oenothera arequipensis – (Chile) Oenothera bahia-blancae – (Argentina) Oenothera catharinensis – (Brazil) Oenothera coquimbensis – (Chile) Oenothera featherstonei – (Peru) Oenothera indecora O. indecora ssp. boliviensis O. indecora ssp. bonariensis O. indecora ssp. indecora Oenothera mendocinensis – (Argentina) Oenothera mollissima – (Brazil) Oenothera montevidensis – (Uruguay) Oenothera odorata – (Argentina, Chile) Oenothera parodiana O. parodiana Tropicos.org. Missouri Botanical Garden. 2011-12-10 O. parodiana ssp. brasiliensis – (Argentina, Brazil, Uruguay) O. parodiana ssp. parodiana – (Argentina) O. parodiana ssp. strigulosa – (Argentina) Oenothera picensis O. picensis Tropicos.org. Missouri Botanical Garden. 2011-12-10 O. picensis ssp. bonariensis – (Argentina) O. picensis ssp. cordobensis – (Argentina) O. picensis ssp. picensis – (Chile) Oenothera ravenii – (Argentina, Brazil, Chile, Uruguay)O. ravenii Tropicos.org. Missouri Botanical Garden. 2011-12-10 O. ravenii ssp. argentinae – (Argentina, Brazil) O. ravenii ssp. chilensis – (Chile) O. ravenii ssp. ravenii – (Brazil) Oenothera stricta O. stricta Tropicos.org. Missouri Botanical Garden. 2011-12-10 O. stricta ssp. altissima – (Argentina) O. stricta ssp. argentinae – (Argentina) O. stricta ssp. stricta – (Chile)
series Clelandia
Oenothera elongata – (Bolivia, Peru) Oenothera punae – (Bolivia) Oenothera siambonensis – (Argentina) Oenothera villaricae – (Argentina, Chile)
series Renneria
Oenothera longituba – (Argentina) Oenothera nana – (Argentina, Bolivia, Chile, Peru) Oenothera pedunculifolia – (Argentina) Oenothera peruana – (Chile, Peru) Oenothera sandiana – (Chile, Ecuador) Oenothera santarii – (Argentina) Oenothera scabra O. scabra Tropicos.org. Missouri Botanical Garden. 2011-12-10 O. scabra ssp. scabra – (Bolivia, Peru) O. scabra ssp. ucrosensis – (Peru)