Primula integrifolia

Plate 1 figs. a–h · 8 separate observations

Primula integrifolia, photographed by Christoph Moning — fig. b Christoph Moning, CC BY 4.0 / obs. 145132952

Primula integrifolia, photographed by Jason Grant — fig. c Jason Grant, CC BY 4.0 / obs. 138530341

Primula integrifolia, photographed by Quentin Groom — fig. d Quentin Groom, CC0 1.0 / obs. 134528309

Primula integrifolia, photographed by Pieter Huybrechts — fig. e Pieter Huybrechts, CC0 1.0 / obs. 134328859

Primula integrifolia, photographed by Karel Schoonvaere — fig. f Karel Schoonvaere, CC0 1.0 / obs. 87013401

Primula integrifolia, photographed by Thomas Koffel — fig. g Thomas Koffel, CC BY 4.0 / obs. 12484943

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 145114
Filed as: Primula integrifolia L.
Det. by: not recorded on this sheet
Collected: E. Garroute 1864-07-29
Origin: FR
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. We link to the digitised sheet rather than rehosting it, because the holding institutions do not serve their images to third parties reliably and we are not going to show you a picture we cannot actually deliver. 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 sheets never recorded a determiner, which is ordinary.

Native range 5 botanical countries

Native distribution of Primula integrifolia, 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
Austria	AUT	EUROPE
France	FRA
Italy	ITA
Spain	SPA
Switzerland	SWI

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 180 in flower of 183 examined

100%

67%

Proportion of examined Primula integrifolia in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	0	0	too few examined
Apr	7	7	100%	65% to 100%
May	60	60	100%	94% to 100%
Jun	85	85	100%	96% to 100%
Jul	22	22	100%	85% to 100%
Aug	4	6	67%	30% to 90%
Sep	2	3	too few examined
Oct	0	0	too few examined
Nov	0	0	too few examined
Dec	0	0	too few examined

Peak flowering in Apr. Each bar is the share of Primula integrifolia 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. 180 of 183 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 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.

Where it actually grows measured, from 503 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-18.8 °C	-11.0 °C	-5.9 °C
Warmest month, mean daily high	11.6 °C	15.0 °C	18.7 °C
Annual rainfall	1,089 mm	1,571 mm	2,485 mm
Rainfall in the driest quarter	180 mm	283 mm	472 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 503 research-grade observations of Primula integrifolia 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. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 7 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.

Aretia integrifolia Link
Auricula integrifolia Spach
Auricula-ursi integrifolia (L.) Soják
Primula candolleana C.Agardh
Primula incisa Lam.
Primula integrifolia var. candolleana (C.Agardh) Arcang.
Primula integrifolia var. garvanensis Widmer

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.