Dactylis glomerataL.

orchard grass

WFO wfo-0000861498 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Dactylis glomerata, photographed by Erin Springinotic
fig. a Erin Springinotic, CC0 1.0 / 2022-06-13 / obs. 205923642
Dactylis glomerata, photographed by Anastasia_Surkova
fig. b Anastasia_Surkova, CC BY 4.0 / obs. 205890881
Dactylis glomerata, photographed by Mila C.
fig. c Mila C., CC BY 4.0 / obs. 204478954
Dactylis glomerata, photographed by Mila C.
fig. d Mila C., CC BY 4.0 / obs. 204475078
Dactylis glomerata, photographed by Pavel Kacl
fig. e Pavel Kacl, CC BY 4.0 / obs. 205077832
Dactylis glomerata, photographed by Pavel Kacl
fig. f Pavel Kacl, CC BY 4.0 / obs. 205805789
Dactylis glomerata, photographed by Vladimir Atachkin
fig. g Vladimir Atachkin, CC BY 4.0 / obs. 204140485
Dactylis glomerata, photographed by alcesevropsky
fig. h alcesevropsky, CC BY-SA 4.0 / obs. 203913953

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.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 10,206 observations

Peak flowering in Jun, from 10,206 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 227 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.

  • Bromus cylindraceus (Brot.) Brot.
  • Bromus glomeratus (L.) Scop.
  • Dactylis abbreviata Bernh. ex Link
  • Dactylis altaica Besser
  • Dactylis altaica Besser
  • Dactylis aschersoniana Graebn.
  • Dactylis capitellata Link
  • Dactylis ciliata (Peterm.) Opiz
  • Dactylis cylindracea Brot.
  • Dactylis decalcata Brand
  • Dactylis glaucescens Willd.
  • Dactylis glomerata f. acroantha Franch.
  • Dactylis glomerata f. amplectens Domin
  • Dactylis glomerata f. angustifrons Domin
  • Dactylis glomerata f. aprica Podp.
  • Dactylis glomerata f. barbata Domin
  • Dactylis glomerata f. capitellata (Link) Maire
  • Dactylis glomerata f. hispida Ghisa
  • Dactylis glomerata f. ibizensis (Gand.) Knoche
  • Dactylis glomerata f. latifolia Issler
  • Dactylis glomerata f. laxa Ortmann ex Opiz
  • Dactylis glomerata f. petrakii Domin
  • Dactylis glomerata f. picta Domin
  • Dactylis glomerata f. prihodae Domin

and 203 more.

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.