Streptanthus lasiophyllus

Plate 1 figs. a–h · 8 separate observations

Streptanthus lasiophyllus, photographed by Daniel Levitis — fig. b Daniel Levitis, CC BY 4.0 / obs. 127052738

Streptanthus lasiophyllus, photographed by Millie Basden — fig. c Millie Basden, CC BY 4.0 / obs. 124603784

Streptanthus lasiophyllus, photographed by Madeleine Claire — fig. d Madeleine Claire, CC BY 4.0 / obs. 124471349

Streptanthus lasiophyllus, photographed by Ken-ichi Ueda — fig. e Ken-ichi Ueda, CC BY 4.0 / obs. 123147150

Streptanthus lasiophyllus, photographed by Bob Miller — fig. h Bob Miller, CC BY 4.0 / obs. 61475167

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 9 botanical countries

Native distribution of Streptanthus lasiophyllus, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Arizona	ARI	NORTHERN AMERICA
California	CAL
Mexican Pacific Is.	MXI
Mexico Northwest	MXN
Nevada	NEV
New Mexico	NWM
Oregon	ORE
Utah	UTA
Washington	WAS

Not drawn on the map: Mexican Pacific Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 36 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

Caulanthus lasiophyllus (Hook. & Arn.) Payson
Caulanthus lasiophyllus var. inalienus Payson
Caulanthus lasiophyllus var. lasiophyllus Payson
Caulanthus lasiophyllus var. rigidus (Greene) Payson
Caulanthus lasiophyllus var. utahensis Payson
Caulanthus stenocarpus Payson
Erysimum retrofractum Torr.
Guillenia inaliena Greene
Guillenia lasiophylla (Hook. & Arn.) Greene
Guillenia rigida (Greene) Greene
Hesperis reflexa Kuntze
Microsisymbrium lasiophyllum (Hook. & Arn.) O.E.Schulz
Microsisymbrium lasiophyllum f. xerophilum (E.Fourn.) O.E.Schulz
Microsisymbrium lasiophyllum var. dasycarpum O.E.Schulz
Microsisymbrium lasiophyllum var. dissectum O.E.Schulz
Microsisymbrium lasiophyllum var. inalienum O.E.Schulz
Microsisymbrium lasiophyllum var. integrifolium O.E.Schulz
Microsisymbrium lasiophyllum var. rigidum (Greene) O.E.Schulz
Sisymbrium acuticarpum M.E.Jones
Sisymbrium deflexum Harv. ex Torr.
Sisymbrium deflexum var. xerophilum E.Fourn.
Sisymbrium lasiophyllum (Hook. & Arn.) K.Brandegee
Sisymbrium reflexum Nutt.
Streptanthus lasiophyllus var. inalienus (B.L.Rob.) Hoover

and 12 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.