Oenothera nuttallii

Oenothera nuttallii
Flowers
Conservation status
Secure  (NatureServe) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Onagraceae
Genus:	Oenothera
Species:	O. nuttallii
Binomial name
Oenothera nuttallii Torr. & A.Gray
Synonyms [2]
Anogra nuttalliana Anogra nuttallii Baumannia nuttalliana Taraxia longiflora

Oenothera nuttallii, the white-stemmed evening-primrose, is a species of flowering plant in the evening primrose family. ^[3] It is native to western Canada (except British Columbia), and the north-central United States, and it has been introduced to Illinois. ^[2] A perennial reaching 60 cm (24 in), it is found in grasslands, sagebrush steppes, and plains, usually in sandy soils. ^[3]

Taxonomy

Oenothera nuttallii was scientifically described and named John Torrey and Asa Gray in 1840. It is part of the genus Oenothera in the Onagraceae family. It has 5 synonyms according to Plants of the World Online. ^[2]

Table of Synonyms ^[2]

Name	Year	Rank	Notes
Anogra nuttallianaSpach	1835	species	≡ hom., nom. superfl.
Anogra nuttallii(Torr. & A.Gray) A.Nelson	1902	species	≡ hom.
Baumannia nuttallianaSpach	1835	species	≡ hom., nom. superfl.
Oenothera albicaulis var. nuttalliiEngelm.	1862	variety	= het.
Taraxia longifloraRaim.	1893	species	≡ hom., nom. superfl.
Notes: ≡ homotypic synonym  ; = heterotypic synonym

References

1. NatureServe (5 September 2025). "Oenothera nuttallii". NatureServe Explorer. Arlington, Virginia. Retrieved 13 September 2025.
2. "Oenothera nuttallii Torr. & A.Gray". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 13 September 2025.
3. "White-stemmed Evening-primrose — Oenothera nuttallii". Montana Field Guide. Montana Natural Heritage Program. 2023. Retrieved 26 November 2023.