Potentilla anglica (Introduced- USA)

Potentilla anglica Laich., Veg. Europ. 1: 475 (1790) (syn: Potentilla anglica subsp. nesogenes (Briq.) Gamisans ex M. Kerguélen; Potentilla nemoralis Nestl.; Potentilla procumbens Sibth.; Potentilla procumbens subsp. nesogenes Briq.; Potentilla salisii Bor.; Potentilla tormentilla subsp. procumbens Syme);
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Macaronesia, Europe to Siberia and Turkey as per POWO;
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Belgium, England, Corsica, Czech Republic, Slovakia, Denmark, Finland, France, Germany, Ireland, Netherlands, ?Italy, Croatia, Poland, Romania, Latvia, European Russia, Sweden, Australia (I) (Tasmania (I)), Jamaica (I), Lesser Antilles (I) (Martinique (I), Dominica (I)), New Zealand (I), Turkey (WN-Anatolia), Azores (Santa Maria Isl., Sao Miguel Isl., Terceira, Graciosa, Sao Jorge, Pico, Faial, Flores Isl., Corvo Isl.), Madeira (Madeira Isl.), USA (I) (California (I), Colorado (I), Maine (I), New York (I), Oregon (I), Pennsylvania (I)), Canada (I) (Labrador (I), Newfoundland (I), Nova Scotia (I), Quebec (I)), St. Pierre et Miquelon (I) as per Catalogue of Life;
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Potentilla anglica from California-GS19012021-2: 2 images.
Potentilla anglica Laichard
English Cinquefoil
A very distinctive species with stolons, leaves palmately compound with 3-5 leaflets, flowers arising singly with four sepals and petals each.
Photographed from Sunnyvale, California, 2-10-2012

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Small Plant For ID : California : 24SEP15 : AK-11 : 11/51 : 5 posts by 2 authors. Attachments (2)

A small plant seen in Fremont, with a tiny yellow flower having four petals.

Probably from Rosaceae family.
Picture taken on 8th Oct,14.
Not sure whether cultivated or growing wild.
Please look at Potentilla and its hybrids.
Possibly the hybrid Potentilla x mixta Nolte ex Rchb. (P. anglica × P. reptans) which has sterile seeds but spreads easily by runners so may be found away from the parent plants.
If it is the hybrid P. × suberecta Zimmeter  it can be found near the parent plants P. erecta and P. anglica.

I hope Potentilla anglica Laichard, characterised by presence of stolons, 3-5 leaflets and 4 sepals and petals

Potentilla rimicola (Munz & I.M.Johnst.) Ertter. ??

P. rimicola is a cliff plant with hanging branches, inflorescence is 5-20 flowered and flower with five petals
This P. anglica has distinctly single flowers, 4 sepals and petals, the only species of genus in California with 4 petals.
I am trying to sort all my California plants.
Could this be Potentilla x mixta?

 

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References: POWO  Catalogue of Life  The Plant List Ver.1.1
http://www.wildflowersofireland.net/plant_detail.php?id_flower=289&wildflower=Tormentil,%20Trailing
https://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Potentilla+anglica
https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=39674
https://www.first-nature.com/flowers/potentilla-anglica.php
https://gobotany.nativeplanttrust.org/species/potentilla/anglica/