Trillium grandiflorum(Michx.) Salisb.

large white trillium

WFO wfo-0000751101 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Trillium grandiflorum, photographed by Lorie Shaull
fig. a Lorie Shaull, CC BY-SA 4.0 / 2022-06-10 / obs. 205429354
Trillium grandiflorum, photographed by Craig Martin
fig. b Craig Martin, CC0 1.0 / obs. 203310925
Trillium grandiflorum, photographed by Bernie Paquette
fig. c Bernie Paquette, CC BY 4.0 / obs. 200858237
Trillium grandiflorum, photographed by Brittany
fig. d Brittany, CC0 1.0 / obs. 200750215
Trillium grandiflorum, photographed by Liren Varghese
fig. e Liren Varghese, CC BY 4.0 / obs. 205024585
Trillium grandiflorum, photographed by Mason Heberling
fig. f Mason Heberling, CC BY 4.0 / obs. 203815867
Trillium grandiflorum, photographed by Bernie Paquette
fig. g Bernie Paquette, CC BY 4.0 / obs. 200851249
Trillium grandiflorum, photographed by Jeff Clark
fig. h Jeff Clark, CC BY 4.0 / obs. 200631367

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 = 28,048 observations

Peak flowering in May, from 28,048 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 32 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.

  • Trillium chandleri Farw.
  • Trillium chandleri f. foliaceum Farw.
  • Trillium chandleri f. gladewitzii Farw.
  • Trillium chandleri f. palaceum Farw.
  • Trillium chandleri f. plenum Farw.
  • Trillium chandleri f. subulatum Farw.
  • Trillium erythrocarpum Curtis
  • Trillium grandiflorum f. chandleri (Farw.) Vict.
  • Trillium grandiflorum f. dimerum Louis-Marie
  • Trillium grandiflorum f. divisum Louis-Marie
  • Trillium grandiflorum f. elongatum Louis-Marie
  • Trillium grandiflorum f. grandiflorum
  • Trillium grandiflorum f. lirioides (Raf.) Vict.
  • Trillium grandiflorum f. petalosum Louis-Marie
  • Trillium grandiflorum f. polymerum Vict.
  • Trillium grandiflorum f. regressum Louis-Marie
  • Trillium grandiflorum f. roseum Farw.
  • Trillium grandiflorum f. striatum Louis-Marie
  • Trillium grandiflorum f. viride Farw.
  • Trillium grandiflorum var. lirioides Vict.
  • Trillium grandiflorum var. macropetalum Regel
  • Trillium grandiflorum var. minimum N.Coleman
  • Trillium lirioides Raf.
  • Trillium lirioides f. albomarginatum Farw.

and 8 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.