Stachys rigida (rough hedgenettle)

Plate 1 figs. a–h · 8 separate observations

Stachys rigida, photographed by Karen and Mike — fig. a Karen and Mike, CC BY 4.0 / 2021-08-01 / obs. 149093883

Stachys rigida, photographed by Mike Palmer — fig. b Mike Palmer, CC0 1.0 / obs. 143258213

Stachys rigida, photographed by Dario Taraborelli — fig. c Dario Taraborelli, CC0 1.0 / obs. 136135491

Stachys rigida, photographed by Franco Folini — fig. d Franco Folini, CC BY 4.0 / obs. 130508152

Stachys rigida, photographed by Daniel Levitis — fig. e Daniel Levitis, CC BY 4.0 / obs. 127092098

Stachys rigida, photographed by Millie Basden — fig. f Millie Basden, CC BY 4.0 / obs. 80359525

Stachys rigida, photographed by stinger — fig. h stinger, CC BY 4.0 / obs. 22746314

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 5 botanical countries

Native distribution of Stachys rigida, 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
California	CAL	NORTHERN AMERICA
Mexico Northwest	MXN
Nevada	NEV
Oregon	ORE
Washington	WAS

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.

Flowering 351 in flower of 393 examined

88%

78%

97%

95%

100%

79%

88%

73%

Proportion of examined Stachys rigida in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	7	0%	0% to 35%
Feb	7	8	88%	53% to 98%
Mar	28	36	78%	62% to 88%
Apr	163	168	97%	93% to 99%
May	87	92	95%	88% to 98%
Jun	19	19	100%	83% to 100%
Jul	23	29	79%	62% to 90%
Aug	14	16	88%	64% to 97%
Sep	8	11	73%	43% to 90%
Oct	1	3	too few examined
Nov	0	1	too few examined
Dec	1	3	too few examined

Peak flowering in Jun. Each bar is the share of Stachys rigida observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 351 of 393 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 14 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.

Stachys ajugoides var. quercetorum (A.Heller) A.Heller
Stachys ajugoides var. rigida (Nutt. ex Benth.) Jeps. & Hoover
Stachys gracilenta A.Heller
Stachys littoralis Greene
Stachys nuttallii var. leptostachya Benth.
Stachys prattenii Durand
Stachys quercetorum A.Heller
Stachys rigida subsp. rivularis Epling
Stachys rigida subsp. typica Epling
Stachys rigida var. quercetorum (A.Heller) G.A.Mulligan & D.B.Munro
Stachys rivularis A.Heller
Stachys striata Greene
Stachys vestita Howell
Stachys viarum A.Heller

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.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
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.