Erysimum asperum

Erysimum asperum
	In bloom
	Watercolor by Margaret Neilson Armstrong
Conservation status
	; Secure (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Erysimum
Species:	E. asperum
Binomial name
	Erysimum asperum; (Nutt.) DC.
Synonyms
	List Cheiranthus asperNutt.; Cheiranthus grandiflorusA.Heller; Cheirinia aspera(Nutt.) Rydb.; Erysimum asperum var. dolichocarpumO.E.Schulz; Erysimum asperum f. nanumCockerell; Erysimum lanceolatumPursh; ;

Last updated August 17, 2025

Erysimum asperum, the western wallflower (a name it shares with Erysimum capitatum ), is a species of flowering plant in the family Brassicaceae.^[2]^[3]^[4] It is native to west-central Canada, the west-central United States, and northern Mexico; in grasslands generally east of the Continental Divide and west of the Mississippi.^[2]^[5] It is a member of the Erysimum asperum-E. capitatum species complex.^[5]

References

↑ NatureServe (2023). "Erysimum asperum". Arlington, Virginia. Retrieved 5 December 2023.
1 2 3 "Erysimum asperum (Nutt.) DC". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 20 April 2022.
↑ "Erysimum asperum (Western Wallflower)". MinnesotaWildflowers.info. Minnesota Wildflowers. 2022. Retrieved 20 April 2022.
↑ "Erysimum asperum American cress". The Royal Horticultural Society. 2022. Retrieved 20 April 2022. Other common names; false wallflower, orange mustard, western wallflower, garlic mustard [2]. Synonyms; Cheiranthus asperus
1 2 Turner, B. L. (2006). "Taxonomy and nomenclature of the Erysimum asperum-E. capitatum complex (Brassicaceae)". Phytologia. 88: 279–287. doi: 10.5962/bhl.part.10454 .

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[NatureServe-1] NatureServe (2023). "Erysimum asperum". Arlington, Virginia. Retrieved 5 December 2023.

[283609-1-2] 1 2 3 "Erysimum asperum (Nutt.) DC". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 20 April 2022.

[3] "Erysimum asperum (Western Wallflower)". MinnesotaWildflowers.info. Minnesota Wildflowers. 2022. Retrieved 20 April 2022.

[4] "Erysimum asperum American cress". The Royal Horticultural Society. 2022. Retrieved 20 April 2022. Other common names; false wallflower, orange mustard, western wallflower, garlic mustard [2]. Synonyms; Cheiranthus asperus

[1_of_756_Google_Scholar_results-5] 1 2 Turner, B. L. (2006). "Taxonomy and nomenclature of the Erysimum asperum-E. capitatum complex (Brassicaceae)". Phytologia. 88: 279–287. doi: 10.5962/bhl.part.10454 .

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