Potentilla tommasiniana

Plate 1 figs. a–g · 3 observations

This species has been photographed under an open licence only 3 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Potentilla tommasiniana, photographed by Mirko Ubović — fig. a Mirko Ubović, CC0 1.0 / 2022-03-27 / obs. 185401114

Potentilla tommasiniana, photographed by Michael D. Pirie — fig. c Michael D. Pirie, CC BY 4.0 / obs. 50034586

Potentilla tommasiniana, photographed by Ljaž — fig. d Ljaž, CC BY 4.0 / obs. 180766952

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.

The specimen a real sheet, in a real collection

Herbarium: Smithsonian, US National Herbarium
Accession: US 1395467
Filed as: Potentilla tomasiniana F.W.Schultz
Det. by: not recorded on this sheet
Collected: A. Richter 1908-05-09
Origin: BA
The sheet: View the digitised specimen (CC0 1.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 7 botanical countries

Native distribution of Potentilla tommasiniana, 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
Albania	ALB	EUROPE
Bulgaria	BUL
Czechia-Slovakia	CZE
Greece	GRC
Italy	ITA
NW. Balkan Pen.	YUG
Romania	ROM

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.

Where it actually grows measured, from 38 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-9.0 °C	-3.6 °C	3.0 °C
Warmest month, mean daily high	19.9 °C	24.8 °C	27.2 °C
Annual rainfall	773 mm	1,667 mm	1,976 mm
Rainfall in the driest quarter	154 mm	311 mm	378 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 38 research-grade observations of Potentilla tommasiniana that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 22 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.

Potentilla acaulis subsp. tommasiniana (F.W.Schultz) Soják
Potentilla arenaria subsp. tommasiniana (F.W.Schultz) Th.Wolf
Potentilla arenaria subsp. tommasiniana (F.W.Schultz) Th.Wolf
Potentilla arenaria unranked acclinis (Beck) Oborny
Potentilla arenaria var. tommasiniana (F.W.Schultz) Th.Wolf
Potentilla arenaria var. trifoliata (W.D.J.Koch) Borbás
Potentilla cinerea subsp. tommasiniana (F.W.Schultz) Gerstb.
Potentilla cinerea subsp. tommasiniana (F.W.Schultz) Velen.
Potentilla cinerea var. acclinis Beck
Potentilla cinerea var. tommasiniana (F.W.Schultz) Markova
Potentilla cinerea var. tommasiniana (F.W.Schultz) Nyman
Potentilla cinerea var. trifoliata W.D.J.Koch
Potentilla grandiflora Scop.
Potentilla subacaulis var. tommasiniana (F.W.Schultz) Marches.
Potentilla tomasiniana F.W.Schultz
Potentilla tommasiniana f. longifolia Th.Wolf
Potentilla tommasiniana f. quinata Th.Wolf
Potentilla tommasiniana var. acclinis (Beck) Posp.
Potentilla tommasiniana var. typica Posp.
Potentilla trifoliata (W.D.J.Koch) Beck
Potentilla verna var. tommasiniana (F.W.Schultz) Gams
Potentilla verna var. trifoliata (W.D.J.Koch) Kitt.

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.