Onagraceae

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Onagraceae
Temporal range: Maastrichtian - recent [1]
Chamerion.latifolium.web.jpg
Chamaenerion latifolium
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Juss. [2]
Type genus
Oenothera
L.
Subfamilies
Synonyms
  • Circaeaceae Bercht. & J.Presl
  • Epilobiaceae Vent.
  • Jussiaeaceae Martinov
  • Oenotheraceae C.C.Robin [3]

The Onagraceae are a family of flowering plants known as the willowherb family or evening primrose family. They include about 650 species of herbs, shrubs, and trees [4] in 17 genera. [5] The family is widespread, occurring on every continent from boreal to tropical regions.

Contents

The family includes a number of popular garden plants, including evening primroses ( Oenothera ) and fuchsias (Fuchsia). Some, particularly the willowherbs ( Epilobium ), are common weeds in gardens and rapidly colonize disturbed habitats in the wild. One such species is fireweed (Chamaenerion angustifolium).

The family is characterised by flowers with usually four sepals and petals; in some genera, such as Fuchsia, the sepals are as brightly coloured as the petals.

The seeds are generally very small. In some genera, such as Epilobium, they have tufts of hairs [6] and are dispersed on the wind. In others, such as Fuchsia, the seeds develop in juicy berries dispersed by animals. The leaves are commonly opposite or whorled, but are spirally arranged in some species; in most, they are simple and lanceolate in shape. The pollen grains in many genera are loosely held together by viscin threads. Most bees cannot collect it, and only bees with specialized morphologies can effectively pollinate the flowers; nearly all bee taxa that visit the flowers are oligoleges specialized on the family Onagraceae.

The family was named after the genus Onagra (now known as Oenothera ) in 1836 by John Lindley in the second edition of A Natural System of Botany.

Genera

Subfamily Ludwigioideae

Subfamily Onagroideae

Tribe Circaeeae
Tribe Epilobieae
Tribe Gongylocarpeae
Tribe Hauyeae
Tribe Lopezieae
Tribe Onagreae

Several genera are synonymized in the classification presented above, in particular Calylophus and Gaura , which have both been absorbed into Oenothera but appear often in the literature as belonging to the previous genera.

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<i>Oenothera</i> Genus of plants

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.

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<i>Epilobium</i> Genus of flowering plants in the willowherb family Onagraceae

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.

<i>Oenothera biennis</i> Species of flowering plant

Oenothera biennis, the common evening-primrose, is a species of flowering plant in the family Onagraceae, native to eastern and central North America, from Newfoundland west to Alberta, southeast to Florida, and southwest to Texas, and widely naturalized elsewhere in temperate and subtropical regions. Evening primrose oil is produced from the plant.

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<i>Oenothera elata</i> Species of flowering plant

Oenothera elata is a species of Oenothera known by the common name Hooker's evening primrose or tall evening primrose. Subspecies include hookeri, hirsutissima, longisima, jamesii, villosa and elata. It is native to much of western and central North America. The plants are quite tall, especially the hookeri subspecies, native to California, which can reach about 1.8 meters height. The plants are found along roadsides, in moist meadows, or in woodland, from sea level up to 9,000 ft (2,700 m) in elevation.

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Chamaenerion is a genus of flowering plants in the family Onagraceae. It has sometimes been included in the genus Epilobium. Members of the genus may be called willowherbs, or fireweeds, based on a common name used for C. angustifolium. They are upright herbaceous perennials, growing from a woody base or from rhizomes, with racemes of usually purple to pink flowers. All species are found in the northern hemisphere. Most occur in moist habitats; C. angustifolium is the exception, favouring disturbed ground.

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<i>Oenothera perennis</i> Species of flowering plant

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.

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References

  1. "Myrtales". www.mobot.org. Retrieved 2023-07-20.
  2. Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society. 161 (2): 105–121. doi: 10.1111/j.1095-8339.2009.00996.x . Retrieved 2013-07-06.
  3. "Family: Onagraceae Juss., nom. cons". Germplasm Resources Information Network. United States Department of Agriculture. 2007-04-12. Archived from the original on 2012-01-26. Retrieved 2010-10-29.
  4. Onagraceae. Flora of China.
  5. Ford, V. S.; Gottlieb, L. D. (2007). "Tribal Relationships within Onagraceae Inferred from PgiC Sequences". Systematic Botany. 32 (2): 348–356. doi:10.1600/036364407781179725. JSTOR   25064249. S2CID   86207688.
  6. Epilobium. Flora of China.
  7. "GRIN Genera of Onagraceae subfamily Ludwigioideae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  8. "GRIN Genera of Onagraceae tribe Circaeeae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  9. Christian Geier, Johannes M. Bouchal, Silvia Ulrich, Dieter Uhl, Torsten Wappler, Sonja Wedmann, Reinhard Zetter, Jürg Schönenberger, Friðgeir Grímsson (2023). Potential pollinators and paleoecological aspects of Eocene Ludwigia (Onagraceae) from Eckfeld, Germany. Palaeoworld, 2023, ISSN 1871-174X, https://doi.org/10.1016/j.palwor.2023.07.003.
  10. "GRIN Genera of Onagraceae tribe Epilobieae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  11. "GRIN Genera of Onagraceae tribe Gongylocarpeae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  12. "GRIN Genera of Onagraceae tribe Hauyeae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  13. "GRIN Genera of Onagraceae tribe Lopezieae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.
  14. 1 2 "Oenothera". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2013-01-29.
  15. "GRIN Genera of Onagraceae tribe Onagreae". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-29.