Polygonum maritimumL.

WFO wfo-0000489807 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Polygonum maritimum, photographed by Santiago Martín-Bravo
fig. a Santiago Martín-Bravo, CC BY 4.0 / 2022-05-23 / obs. 200118239
Polygonum maritimum, photographed by Duarte Frade
fig. b Duarte Frade, CC BY 4.0 / obs. 195725926
Polygonum maritimum, photographed by Alessia Guggisberg
fig. c Alessia Guggisberg, CC BY 4.0 / obs. 189492227
Polygonum maritimum, photographed by Davide Puddu
fig. d Davide Puddu, CC BY 4.0 / obs. 187909821
Polygonum maritimum, photographed by Tim Johnson
fig. e Tim Johnson, CC BY 4.0 / obs. 186229667
Polygonum maritimum, photographed by Tim Johnson
fig. f Tim Johnson, CC BY 4.0 / obs. 174544909
Polygonum maritimum, photographed by Tim Johnson
fig. g Tim Johnson, CC BY 4.0 / obs. 174437569
Polygonum maritimum, photographed by Emanuele Santarelli
fig. h Emanuele Santarelli, CC BY-SA 4.0 / obs. 166834273

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 34 botanical countries

Regions where Polygonum maritimum is native: Algeria, Azores, Canary Is., Cape Provinces, Egypt, Libya, Madeira, Morocco, Tunisia, Cyprus, East Aegean Is., Lebanon-Syria, Palestine, Transcaucasus, Türkiye, Albania, Baleares, Bulgaria, Corse, France, Great Britain, Greece, Ireland, Italy, Kriti, Krym, Netherlands, NW. Balkan Pen., Portugal, Romania, Sardegna, Sicilia, Spain, Türkiye-in-Europe AlgeriaCape ProvincesEgyptLibyaMoroccoTunisiaCyprusEast Aegean Is.Lebanon-SyriaPalestineTranscaucasusTürkiyeAlbaniaBulgariaCorseFranceGreeceIrelandItalyKritiKrymNetherlandsNW. Balkan Pen.PortugalRomaniaSiciliaSpainTürkiye-in-Europe AzoresCanary Is.MadeiraBalearesSardegna
Native distribution of Polygonum maritimum, 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. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Albania ALB EUROPE
Baleares BAL
Bulgaria BUL
Corse COR
France FRA
Great Britain GRB
Greece GRC
Ireland IRE
Italy ITA
Kriti KRI
Krym KRY
Netherlands NET
NW. Balkan Pen. YUG
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
Spain SPA
Türkiye-in-Europe TUE
Algeria ALG AFRICA
Azores AZO
Canary Is. CNY
Cape Provinces CPP
Egypt EGY
Libya LBY
Madeira MDR
Morocco MOR
Tunisia TUN
Cyprus CYP ASIA-TEMPERATE
East Aegean Is. EAI
Lebanon-Syria LBS
Palestine PAL
Transcaucasus TCS
Türkiye TUR

Not drawn on the map: Great Britain. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 119 in flower of 131 examined

Peak flowering in Apr. Each bar is the share of Polygonum maritimum 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. 119 of 131 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 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 3 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.

  • Avicularia maritima Didrichs.
  • Polygonum chilense K.Koch
  • Polygonum maritimum var. chilense (K.Koch) Skottsb.

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. 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.