Subdivisions of the genus Oenothera in the Onagraceae (evening primrose) family: [1] [2] [3]
Oenothera sect. Angora(Spach) W.L.Wagner & Hoch 2007 – western North America in dry, sandy soils in deserts, grasslands, and forest openings, up to 2000 m. elevation. [2]
Oenothera sect. Calylophus(Spach) W. L. Wagner & Hoch 2007 – in North American Great Plains and south to central Mexico.
Oenothera sect. ContortaeW.L.Wagner 1987 – Sierra Nevadas of California, extending just into western Nevada. [17]
Oenothera sect. EremiaW.L.Wagner 1986 – western North America, with a distribution in the Chihuahuan, Mojave, and Sonoran deserts. [18]
Oenothera sect. Gaura(L.) W.L.Wagner & Hoch 2007 – beeblossom (includes most of the taxa formerly placed in genus Gaura ) [20] [21]
Oenothera sect. Gauropsis(Torrey & Frémont) W.L.Wagner 1985 – Wyoming, western Nebraska, eastern Colorado, New Mexico, Kansas and the Texas Panhandle in the U.S. High Plains. [26]
Oenothera sect. Hartmannia(Spach) W. L. Wagner & Hoch 2007 – 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. [28]
Oenothera sect. KleiniaMunz 1965 – 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. [32]
Oenothera sect. Kneiffia(Spach) Straley 1978 – eastern North America, at elevations up to 1900 m. [35]
Oenothera sect. Lavauxia(Spach) W. L. Wagner & Hoch 2007 – North and South America.
Oenothera sect. LeucocoryneW.L.Wagner & Hoch 2007 – from southern Texas, through northern Mexico to the Trans-Volcanic Belt of central Mexico, southward to Guatemala, Nicaragua, and Costa Rica. [2]
Oenothera sect. Megapterium(Spach) W.L.Wagner & Hoch 2007 – distributed in south-central North America.
Oenothera sect. Oenothera – distributed from Canada to Panama. [57]
series Allochroa
series Clelandia
series Renneria
Oenothera sect. Pachylophus(Spach) W.L.Wagner 2005 – western North America.
Oenothera sect. ParadoxusW. L. Wagner 1984 – distribution within the Chihuahuan Desert. [76]
Oenothera sect. Peniophyllum(Pennell) Munz 1937 – The single species is found in the southeastern U.S.
Oenothera sect. RaveniaW.L.Wagner 1986 – within Mexico. [78]
Oenothera sect. XanthocoryneW.L.Wagner & Hoch 2007 – from central Mexico to northern South America. [80]
Oenothera is a genus of about 145 species of herbaceous flowering plants native to the Americas. It is the type genus of the family Onagraceae. Common names include evening primrose, suncups, and sundrops. They are not closely related to the true primroses.
Epilobium is a genus of flowering plants in the family Onagraceae, containing about 197 species. The genus has a worldwide distribution. It is most prevalent in the subarctic, temperate and subantarctic regions, whereas in the subtropics and tropics Epilobium species are restricted to the cool montane biomes, such as the New Guinea Highlands.
Oenothera speciosa is a species in the evening primrose family known by several common names, including pinkladies, pink evening primrose, showy evening primrose, Mexican primrose, and buttercups.
Camissonia, sometimes commonly known as sun cup or sundrop, is a genus of annual and perennial plants in the evening primrose family Onagraceae. A total of 12 species are known, nearly all from western North America, especially in the California Floristic Province, but also one from South America. Previous circumscriptions of the genus had recognized up to 62 species before it was split among other closely related genera.
Gaura was a genus of flowering plants in the family Onagraceae, native to North America. The name was derived from Greek γαῦρος (gaûros) meaning "superb" and named in reference to the stature and floral display of some species in this genus. The genus included many species known commonly as beeblossoms. Genetic research showed that the genus was paraphyletic unless the monotypic genus Stenosiphon is included within Gaura, increasing the number of species in the genus to 22. Gaura is now a synonym of Oenothera, with the bulk of the Gaura taxa in genus Oenotherasect. Gaura(L.) W.L.Wagner &Hoch.
Oenothera fruticosa, the narrowleaf evening primrose or narrow-leaved sundrops, is a species of flowering plant in the evening primrose family.
Oenothera rosea, also known as rosy evening-primrose, rose evening primrose, pink evening primrose, or Rose of Mexico, is a plant belonging to the genus Oenothera and native to northern Mexico and Texas.
Epilobium ciliatum, known by the common names fringed willowherb, American willowherb, slender willow herb, and northern willow herb is a species of flowering plant in the willowherb family Onagraceae. This species is native to much of North America, southern South America, and East Asia. It is an introduced species in much of Eurasia and Australia.
Oenothera suffrutescens is a species of flowering plant in the evening primrose family known as scarlet beeblossom and scarlet gaura.
Oenothera xenogaura, is a species of flowering plant in the evening primrose family known by the common names Drummond's beeblossom and scented gaura. It is native to Mexico and its range extends into Texas. It can be found in parts of the southern and southwestern United States where it is an introduced species and is a minor weed in some areas. This is a mat-forming perennial herb growing from rhizomes. Stems reach 10 or 12 centimeters in height can be plentiful and tightly clumped. Leaves are about one to nine centimeters long and linear to slightly oval-shaped. The stems and foliage are covered in hairs. The plant produces small spike inflorescences with centimeter-long sepals and smaller spoon-shaped petals which are white, fading to pink. The fruit is an erect, woody capsule about a centimeter long with a base shaped like a stalk with a bulge at the center.
Gaura sinuata is a species of flowering plant in the evening primrose family known by the common names wavyleaf beeblossom and Red River gaura. In 2007 the species, along with the genus Gaura was reclassified in the genus Oenothera. This species then becomes O. sinuosa in Oenothera Section Gaura.
Chamaenerion latifolium is a species of flowering plant in the evening primrose family known by the English common names dwarf fireweed and river beauty willowherb. It has a circumboreal distribution, appearing throughout the northern regions of the Northern Hemisphere, including subarctic and Arctic areas such as snowmelt-flooded gravel bars and talus, in a wide range of elevations. This is a perennial herb growing in clumps of leaves variable in size, shape, and texture above a woody caudex. The leaves are 1 to 10 centimeters long, lance-shaped to oval, pointed or rounded at the tips, and hairy to hairless and waxy. The inflorescence is a rough-haired raceme of nodding flowers with bright to deep pink, and occasionally white, petals up to 3 centimeters long. Behind the opened petals are pointed sepals. The fruit is an elongated capsule which may exceed 10 centimeters in length.
Oenothera perennis is a species of flowering plant in the family Onagraceae and is native to the eastern United States and Canada. Its common names include little evening primrose, small sundrops, and small evening primrose. Its native habitats include shaly slopes, moist or dry fields, pastures and roadsides. Oenothera perennis is a perennial herb. It has yellow flowers that open during the day and close at night. Each flower has four petals that are notched at the tip with veins radiating from the base.
Oenothera californica, known by the common name California evening primrose, is a species of flowering plant in the evening primrose family.
Oenothera macrocarpa, the bigfruit evening primrose, Ozark sundrops, Missouri evening primrose, or Missouri primrose, is a species of flowering plant in the evening primrose family Onagraceae, native to northeast Mexico and the south-central United States, where it is found in calcareous prairies and limestone outcrops.
Oenothera albicaulis is a New World plant in the evening primrose family. It is known by the common names prairie evening-primrose, white-stem evening-primrose, whitish evening primrose, or whitest evening primrose.
Oenothera berlandieri, commonly called Berlandier's sundrops, is a species of flowering plant in the evening primrose family (Onagraceae). It is native to North America, where it is found primarily in the south central region of the United States and in northern Mexico. Its natural habitat is dry prairies, often in rocky or sandy calcareous areas.
Oenothera tetraptera, known as fourwing evening primrose, is a species of flowering plant in the evening primrose family (Onagraceae) native to the Americas. It has widely naturalized in other areas, including southern Africa, Europe, Asia, and Oceania.
Oenothera suffulta, known as roadside gaura, honeysuckle gaura, or kisses, is a flowering plant in the primrose family, Onagraceae. It is endemic to the United States, in Texas and southern Oklahoma.
Oenothera organensis, the Organ Mountains evening-primrose, is a species of flowering plant in the family Onagraceae, native to a few valleys in the Organ Mountains of New Mexico. With only a few thousand individuals, it is nevertheless well-studied due to its complete self-incompatibility, which would seem to be maladaptive in such a rare species.