Erythronium grandiflorumPursh

Glacier Lily

WFO wfo-0000766922 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Erythronium grandiflorum, photographed by Cecelia Alexander
fig. a Cecelia Alexander, CC0 1.0 / 2022-06-07 / obs. 204287285
Erythronium grandiflorum, photographed by Randal
fig. b Randal, CC0 1.0 / obs. 204287699
Erythronium grandiflorum, photographed by Asher Budnik
fig. c Asher Budnik, CC BY 4.0 / obs. 202623763
Erythronium grandiflorum, photographed by mfeaver
fig. d mfeaver, CC BY 4.0 / obs. 203950059
Erythronium grandiflorum, photographed by Josiah Londerée
fig. e Josiah Londerée, CC BY 4.0 / obs. 201766878
Erythronium grandiflorum, photographed by Randal
fig. f Randal, CC0 1.0 / obs. 204286824
Erythronium grandiflorum, photographed by Timothy McNitt
fig. g Timothy McNitt, CC BY 4.0 / obs. 204468414
Erythronium grandiflorum, photographed by mfeaver
fig. h mfeaver, CC BY 4.0 / obs. 203952805

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 = 3,879 observations

Peak flowering in Jun, from 3,879 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 23 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.

  • Erythronium giganteum Lindl.
  • Erythronium grandiflorum f. giganteum (Lindl.) Voss
  • Erythronium grandiflorum subsp. chrysandrum Applegate
  • Erythronium grandiflorum subsp. grandiflorum
  • Erythronium grandiflorum var. chrysandrum (Applegate) Abrams
  • Erythronium grandiflorum var. chrysandrum (Applegate) Scoggan
  • Erythronium grandiflorum var. giganteum (Lindl.) Hook.
  • Erythronium grandiflorum var. grandiflorum
  • Erythronium grandiflorum var. maculatum A.Murray bis
  • Erythronium grandiflorum var. minus Hook.
  • Erythronium grandiflorum var. nudiflorum C.L.Hitchc.
  • Erythronium grandiflorum var. nudipetalum (Applegate) C.L.Hitchc.
  • Erythronium grandiflorum var. pallidum H.St.John
  • Erythronium grandiflorum var. parviflorum S.Watson
  • Erythronium grandiflorum var. robustum Tubergen
  • Erythronium leptopetalum Rydb.
  • Erythronium maximum Douglas ex Baker
  • Erythronium nudipetalum Applegate
  • Erythronium obtusatum Goodd.
  • Erythronium pallidum (H.St.John) G.N.Jones
  • Erythronium parviflorum (S.Watson) Goodd.
  • Erythronium speciosum Nutt. ex Baker
  • Erythronium utahense Rydb.

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.