Pyrus calleryanaDecne.

Callery pear

WFO wfo-0001014302 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Pyrus calleryana, photographed by Nonbinary-Naturalist
fig. a Nonbinary-Naturalist, CC0 1.0 / 2022-05-17 / obs. 198402473

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 = 2,311 observations

Flowering observations of Pyrus calleryana by month
MonthObservations
Jan7
Feb160
Mar891
Apr966
May152
Jun6
Jul1
Aug17
Sep55
Oct31
Nov17
Dec8

Peak flowering in Apr, from 2,311 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 14 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.

  • Pyrus calleryana f. calleryana
  • Pyrus calleryana f. graciliflora Rehder
  • Pyrus calleryana f. tomentella Rehder
  • Pyrus calleryana var. dimorphophylla (Makino) Koidz.
  • Pyrus calleryana var. graciliflora (Rehder) Rehder
  • Pyrus calleryana var. tomentella (Rehder) Rehder
  • Pyrus dimorphophylla Makino
  • Pyrus fauriei C.K.Schneid.
  • Pyrus fauriei var. major Nakai
  • Pyrus fauriei var. pyriformis Nakai
  • Pyrus kawakamii Hayata
  • Pyrus koehnei C.K.Schneid.
  • Pyrus mairei H.Lév.
  • Pyrus tsiukyoensis Koidz.

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.