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Oenothera biennis L. (As per efi thread: 1. In Oenothera glazioviana Petals are much larger 3-5cm long while in Oenothera biennis petals are only upto 2.5cm long. 2. These plants are much taller upto 6 feets and according to FOC stem is upto 150cm in O. glazioviana while plants are much longer upto 200cm in O. biennis. 3. Stigma is surrounded by anthers in O. biennis)

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Binomial Habit Notes References Distribution
Oenothera
biennis
L.
Herb Western Ghats,
Evergreen Forests, Cultivated, Native of Temperate America
Flora of Tamil
Nadu, VOL. I, 1983
Dindigul,
Nilgiri
Oenothera glazioviana Mich. Herb Western
Ghats, Evergreen Forests, Cultivated, Native of Temperate America
Flora
of Tamil Nadu, VOL. I, 1983
Nilgiri
Oenothera nocturna Jacq. Herb Western
Ghats, Evergreen Forests, Cultivated, Native of Temperate America
Flora
of Tamil Nadu, VOL. I, 1983
Nilgiri
Oenothera odorata Jacq. Herb Western
Ghats, Evergreen Forests, Cultivated, Native of Temperate America
Flora
of Tamil Nadu, VOL. I, 1983
Dindigul
Oenothera rosea Ait. Herb Western
Ghats, Evergreen Forests, Cultivated, Native of Tropical America
Flora
of Tamil Nadu, VOL. I, 1983
Dindigul,
Theni
Oenothera stricta Ledeb. Herb Western
Ghats, Evergreen Forests, Cultivated, Native of Tropical America
Matthew,
1999
Dindigul
Oenothera tetraptera Cav. Herb Western
Ghats & Eastern Ghats, Cultivated, Native of Tropical America
Flora
of Tamil Nadu, VOL. I, 1983
Dindigul,
Nilgiri, Salem

.
Oenothera biennis Onagraceae Evening Primrose
Oenothera elata ssp. hookeri Oenothera biennis var. hookeri, Oenothera hookeri Onagraceae Hooker’s Evening Primrose
Oenothera glazioviana Oenothera erythrosepala, Oenothera gigas, Oenothera blandina Onagraceae Redsepal Evening Primrose
Oenothera rosea Onagraceae Pink Evening Primrose

.

Oenothera affinis Cambess. in St. Hilaire (Native in South America from Bolivia and Brazil south to central Argentina and Valparaiso, Chile. Widely naturalized in Europe, Australia, Africa, Asia, and the Hawaiian Island. Not common in Pakistan)
Oenothera glazioviana Micheli in Martius (Widely distributed, but not known as a native plant anywhere, now naturalized on all continents except Antarctica; apparently not extensively naturalized in Pakistan at present)
Oenothera rosea L’ Her. ex Ait. (Native from central and southern Texas, USA, throughout Mexico and Central America to El Salvador, and throughout South America; naturalized throughout the warmer regions of the world. According to Stewart (loc. cit. 508. 1972), O. rosea is an old introduction from Mexico, which has run wild in many areas of Pakistan. He lists the following additional localities for which I have not seen specimens: Hazara, Poonch, Kashmir, Jhelum Valley)
Oenothera stricta subsp. stricta (Native in Chile and Argentina, South America; introduced or naturalized on all continents except Antarctica. Not common in Pakistan)

.

Oenothera erythrosepala Borbas synonym of Oenothera
glazioviana
M. Micheli
 (1200-2300 m; Originated in Europe; widely naturalised in temperate Asia and N. America)
Oenothera rosea L’Her. ex Aiton (1100-2500 m; Native of Peru; widely naturalised in Europe, Himalaya, India, Burma)

.

Oenothera biennis Linnaeus [Bhutan, Japan, Kazakhstan, Korea, Kyrgyzstan, Russia; native to E North America; widely naturalized in SW Asia, Europe, Pacific islands (New Zealand), and S South America]
Oenothera glazioviana Micheli in Martius [Afghanistan, India, Japan, Pakistan, Russia; Africa, SW Asia, Australia, Europe, North and South America, Pacific islands (New Zealand)]
Oenothera laciniata Hill [Japan; native to E North America, naturalized in S Africa, Australia, Central America, Europe, and South America]
Oenothera rosea L’Héritier ex Aiton [Japan; native to S North America and N South America, frequently cultivated and naturalized in SW Asia, Australia, Europe, and South America]
Oenothera stricta Ledebour ex Link [India, Indonesia, Japan, Pakistan, Russia, Sri Lanka; native to South America (Chile and Argentina); naturalized in Africa, SW Asia, Australia, Europe, North America, and Pacific islands]
Oenothera tetraptera Cavanilles [native to S North America (including Mexico); naturalized in Sri Lanka, SW Asia, Australia, Central America, Europe, and N South America]

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Pl. go through Oenothera‎ ‎(Onagraceae‎‎) page with images of species in efloraofindia.

If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, or can identify unidentified images, it will be really nice.


 

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