Linaria angustissima(Loisel.) Borbás

Italian toadflax

WFO wfo-0000445772 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 7 observations

This species has been photographed under an open licence only 7 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.

Linaria angustissima, photographed by Zoltán Stekkelpak
fig. a Zoltán Stekkelpak, CC0 1.0 / 2022-05-20 / obs. 199066771

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 12 botanical countries

Regions where Linaria angustissima is native: Albania, Austria, Bulgaria, Czechia-Slovakia, France, Greece, Hungary, Italy, NW. Balkan Pen., Romania, Spain, Switzerland AlbaniaAustriaBulgariaCzechia-SlovakiaFranceGreeceHungaryItalyNW. Balkan Pen.RomaniaSpainSwitzerland
Native distribution of Linaria angustissima, 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.
RegionTDWG codeContinent
Albania ALB EUROPE
Austria AUT
Bulgaria BUL
Czechia-Slovakia CZE
France FRA
Greece GRC
Hungary HUN
Italy ITA
NW. Balkan Pen. YUG
Romania ROM
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 64 in flower of 65 examined

Proportion of examined Linaria angustissima 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 6 7 86% 49% to 97%
May 12 12 100% 76% to 100%
Jun 11 11 100% 74% to 100%
Jul 10 10 100% 72% to 100%
Aug 9 9 100% 70% to 100%
Sep 5 5 100% 57% to 100%
Oct 10 10 100% 72% to 100%
Nov 1 1 too few examined
Dec 0 0 too few examined

Peak flowering in May. Each bar is the share of Linaria angustissima 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. 64 of 65 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 5 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 20 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.

  • Antirrhinum angustissimum Loisel.
  • Antirrhinum bauhini Gaudin
  • Antirrhinum genistifolium Vill.
  • Antirrhinum genistifolium Vill. ex Benth.
  • Antirrhinum polygalifolium Poir.
  • Linaria angustifolia Rchb.
  • Linaria bauhini H.C.Watson
  • Linaria italica Trevir.
  • Linaria italica var. angustifolia Chav.
  • Linaria koesensis Simonk.
  • Linaria linifolia Rochel
  • Linaria paniculata Peyer ex Vest
  • Linaria polygalifolia Steud.
  • Linaria rudis Janka ex Nyman
  • Linaria ruscinonensis Rouy
  • Linaria siculorum Nyár.
  • Linaria vulgaris subsp. italica (Trevir.) Arcang.
  • Linaria vulgaris subsp. ruscinonensis (Rouy) P.Fourn.
  • Linaria vulgaris var. angustifolia Chav.
  • Linaria vulgaris var. ruscinonensis (Rouy) R.C.V.Douin

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.