Ulmus alataMichx.

Winged Elm

WFO wfo-0001143138 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Ulmus alata, photographed by Joseph Aubert
fig. a Joseph Aubert, CC BY 4.0 / 2022-05-26 / obs. 200908893
Ulmus alata, photographed by Leila Dasher
fig. b Leila Dasher, CC BY 4.0 / obs. 200860235
Ulmus alata, photographed by ALLIE BORGMEYER
fig. c ALLIE BORGMEYER, CC BY 4.0 / obs. 197595901
Ulmus alata, photographed by Joseph McPhail
fig. d Joseph McPhail, CC BY 4.0 / obs. 204522214
Ulmus alata, photographed by Amber M. King
fig. e Amber M. King, CC BY 4.0 / obs. 193338235
Ulmus alata, photographed by Daniel McNair
fig. f Daniel McNair, CC BY 4.0 / obs. 196991517
Ulmus alata, photographed by Annika Lindqvist
fig. g Annika Lindqvist, CC BY 4.0 / obs. 186659991
Ulmus alata, photographed by Mac Post
fig. h Mac Post, CC BY 4.0 / obs. 192312686

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 = 39 observations

Peak flowering in Feb, from 39 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 2 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.

  • Ulmus americana var. alata (Michx.) Spach
  • Ulmus pumila Walter

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.