Calamagrostis arenaria(L.) Roth

European marram grass

WFO wfo-0000856984 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Calamagrostis arenaria, photographed by Halema J
fig. a Halema J, CC BY 4.0 / 2022-05-01 / obs. 192584801
Calamagrostis arenaria, photographed by Arnim Littek
fig. b Arnim Littek, CC BY 4.0 / obs. 201485259
Calamagrostis arenaria, photographed by Arnim Littek
fig. c Arnim Littek, CC BY 4.0 / obs. 195243758
Calamagrostis arenaria, photographed by Jenny Saito
fig. d Jenny Saito, CC BY 4.0 / obs. 197684463
Calamagrostis arenaria, photographed by Arnim Littek
fig. e Arnim Littek, CC BY 4.0 / obs. 194252511
Calamagrostis arenaria, photographed by Stephen James McWilliam
fig. f Stephen James McWilliam, CC0 1.0 / obs. 191806285
Calamagrostis arenaria, photographed by Emily Roberts
fig. g Emily Roberts, CC BY 4.0 / obs. 193144769
Calamagrostis arenaria, photographed by Claas Damken
fig. h Claas Damken, CC BY-SA 4.0 / obs. 192736005

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.

Flowering n = 77 observations

Peak flowering in Jul, from 77 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 24 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.

  • Ammophila arenaria (L.) Link
  • Ammophila arenaria subsp. arundinacea H.Lindb.
  • Ammophila arenaria subsp. australis (Mabille) M.Laínz
  • Ammophila arenaria var. arundinacea Husn.
  • Ammophila arenaria var. australis (Mabille) E.A.Durand & Barratte
  • Ammophila arundinacea var. australis (Mabille) P.Durand & Barratte
  • Ammophila arundinaceae Host
  • Ammophila australis (Mabille) Porta & Rigo
  • Ammophila littoralis (P.Beauv.) Rothm.
  • Ammophila pallida (C.Presl) Fritsch
  • Arundo arenaria L.
  • Arundo littoralis P.Beauv.
  • Calamagrostis arenaria subsp. arundinacea Banfi, Galasso & Bartolucci
  • Calamagrostis arenaria var. australis (Mabille) Asch. & Graebn.
  • Diarrhena littoralis (P.Beauv.) Raspail
  • Phalaris ammophila Link
  • Phalaris maritima Nutt.
  • Psamma ammophila Link
  • Psamma arenaria (L.) Roem. & Schult.
  • Psamma arenaria subsp. australis (Mabille) Bég.
  • Psamma australis Mabille
  • Psamma littoralis P.Beauv.
  • Psamma littoralis var. australis (Mabille) Nyman
  • Psamma pallida C.Presl

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.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.