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Erythranthe peregrina is a perennial monkeyflower species, a rare fertile polyploid that arose from a hybrid of two monkeyflowers and now grows on riverbanks in Britain. It is a small, yellow-flowered herb that grows in moist, open ground.
Erythranthe peregrina is a species of monkeyflower. Its Latin name means "foreign", or more loosely "the foreigner". This species is a rare example of polyploidization and speciation where sterility did not occur. It was discovered in 2011, first reported in 2012, and named Mimulus peregrinus. Around the same time, the genus Mimulus was restructured and this species is now called Erythranthe peregrina and is in the section Simiolus. The species was less than 140 years old at the time of discovery in 2011; its discoverer, Mario Vallejo-Marin of the University of Stirling, compared finding it to "looking at the big bang in the first milliseconds of its occurrence".
Erythranthe peregrina was photographed on the banks of the River Tees, Northern England in 2005, where it was mis-identified as Mimulus luteus by Dr. Peter Llewellyn, an amateur botanist. Vallejo-Marin later collected one of its seeds on 27 August 2011 from the banks of Shortcleuch Water, near Leadhills, South Lanarkshire, in southern Scotland. Making this species even more unusual, two separate populations of E. peregrina arose independently; one on the Scottish mainland and the Orkney Islands off the coast of northern Scotland, via genome duplication from local populations of E. × robertsii, a hybrid of Erythranthe guttata from western North America and Erythranthe lutea from the Andes of South America; both of those species had been imported into Britain. Scientists had known about E. × robertsii for some time, but until 2011 had always found it to be sterile.
Cardinal monkey flower · Small Leaved Monkeyflower · Ephemeral Monkeyflower · Lewis' monkeyflower · Erythranthe naiandina · Monkeyflowers
Text excerpted from the Wikipedia article Erythranthe peregrina by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
