Ptelea trifoliataL.

common hoptree

WFO wfo-0000471373 Accepted WFO 2026-06 6 photographs CC0 / CC BY

Plate 1 figs. a–f

Ptelea trifoliata, photographed by Craig Martin
fig. a Craig Martin, CC0 1.0 / 2022-06-03 / obs. 203173037
Ptelea trifoliata, photographed by Christopher Zacharias
fig. b Christopher Zacharias, CC BY 4.0 / obs. 202103786
Ptelea trifoliata, photographed by Howard Williams
fig. c Howard Williams, CC BY-SA 4.0 / obs. 205232934
Ptelea trifoliata, photographed by Craig Martin
fig. d Craig Martin, CC0 1.0 / obs. 203712405
Ptelea trifoliata, photographed by bmasinton
fig. e bmasinton, CC BY-SA 4.0 / obs. 193169452
Ptelea trifoliata, photographed by Morgan Hay
fig. f Morgan Hay, CC BY 4.0 / obs. 193324694

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 = 2,217 observations

Peak flowering in Apr, from 2,217 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 80 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.

  • Dodonaea trifoliata (L.) Trew
  • Ptelea aboriginum Greene
  • Ptelea acutifolia Greene & Rose
  • Ptelea ambigens Greene
  • Ptelea angustifolia Benth.
  • Ptelea angustifolia var. cognata (Greene) Kearney & Peebles
  • Ptelea antonina Greene
  • Ptelea aquilina Greene
  • Ptelea argentea Greene
  • Ptelea attrita Greene
  • Ptelea baldwinii Torr. & A.Gray
  • Ptelea betulifolia Greene
  • Ptelea carolina Greene
  • Ptelea caroliniana hort. ex Steud.
  • Ptelea coahuilensis Greene
  • Ptelea cognata Greene
  • Ptelea confinis Greene
  • Ptelea crenata Greene
  • Ptelea cuspidata Greene
  • Ptelea elegans Greene
  • Ptelea formosa Greene
  • Ptelea glauca hort. ex Dippel
  • Ptelea glauca Greene
  • Ptelea isophylla Greene

and 56 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.