Erythranthe alsinoides (Chickweed Monkey-flower)

Plate 1 figs. a–h · 8 separate observations

Erythranthe alsinoides, photographed by John Hibbard — fig. a John Hibbard, CC BY 4.0 / 2022-05-31 / obs. 202359370

Erythranthe alsinoides, photographed by humon — fig. b humon, CC BY 4.0 / obs. 201783002

Erythranthe alsinoides, photographed by David Anderson — fig. c David Anderson, CC BY 4.0 / obs. 201110637

Erythranthe alsinoides, photographed by Kieran Hanrahan — fig. e Kieran Hanrahan, CC BY 4.0 / obs. 200394564

Erythranthe alsinoides, photographed by Jack Rouse — fig. f Jack Rouse, CC0 1.0 / obs. 200654667

Erythranthe alsinoides, photographed by Ellyne Geurts — fig. g Ellyne Geurts, CC0 1.0 / obs. 200445457

Erythranthe alsinoides, photographed by Shane Johnson — fig. h Shane Johnson, CC0 1.0 / obs. 199001784

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 Erythranthe alsinoides, 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
British Columbia	BRC	NORTHERN AMERICA
California	CAL
Idaho	IDA
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 700 in flower of 719 examined

93%

97%

98%

97%

98%

86%

Proportion of examined Erythranthe alsinoides in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	1	1	too few examined
Feb	14	15	93%	70% to 99%
Mar	146	150	97%	93% to 99%
Apr	285	291	98%	96% to 99%
May	179	184	97%	94% to 99%
Jun	63	64	98%	92% to 100%
Jul	12	14	86%	60% to 96%
Aug	0	0	too few examined
Sep	0	0	too few examined
Oct	0	0	too few examined
Nov	0	0	too few examined
Dec	0	0	too few examined

Peak flowering in Jun. Each bar is the share of Erythranthe alsinoides 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. 700 of 719 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 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 3 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.

Mimulus alsinoides Douglas ex Benth.
Mimulus alsinoides var. minimus Benth.
Mimulus alsinoides var. paniculatus Benth.

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.