Oenothera speciosa (Pinkladies)

Plate 1 figs. a–h

Oenothera speciosa, photographed by WATANABE Hitoshi 渡辺仁 — fig. a WATANABE Hitoshi 渡辺仁, CC BY 4.0 / 2022-06-12 / obs. 205386834

Oenothera speciosa, photographed by Thomas Koffel — fig. b Thomas Koffel, CC BY 4.0 / obs. 204546250

Oenothera speciosa, photographed by Nathan May — fig. c Nathan May, CC BY 4.0 / obs. 199112703

Oenothera speciosa, photographed by Bonnie Semmling — fig. d Bonnie Semmling, CC BY 4.0 / obs. 202366994

Oenothera speciosa, photographed by Melissa McMasters — fig. e Melissa McMasters, CC BY 4.0 / obs. 205643037

Oenothera speciosa, photographed by Nonbinary-Naturalist — fig. f Nonbinary-Naturalist, CC0 1.0 / obs. 198402042

Oenothera speciosa, photographed by Mark G — fig. g Mark G, CC0 1.0 / obs. 198511951

Oenothera speciosa, photographed by Catherine C. Galley — fig. h Catherine C. Galley, CC BY 4.0 / obs. 201793410

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 = 4,829 observations

140

865

1945

1036

355

138

102

Flowering observations of Oenothera speciosa by month
Month	Observations
Jan	16
Feb	140
Mar	865
Apr	1945
May	1036
Jun	355
Jul	138
Aug	98
Sep	102
Oct	77
Nov	39
Dec	18

Peak flowering in Apr, from 4,829 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.

Hartmannia berlandieri (Spach) Rose
Hartmannia speciosa Small
Oenothera berlandieri (Spach) D.Dietr.
Oenothera delessertiana Steud.
Oenothera hirsuta (Spach) D.Dietr.
Oenothera obtusifolia D.Dietr.
Oenothera shimekii H.Lév. & Guffroy
Oenothera spachii D.Dietr.
Oenothera speciosa f. subintegrifolia H.Lév.
Oenothera speciosa f. variegata H.Lév.
Oenothera speciosa var. berlandieri (Spach) Munz
Oenothera speciosa var. childsii (L.H.Bailey) Munz
Oenothera speciosa var. serrulatiformis H.Lév.
Oenothera speciosa var. speciosa
Oenothera speciosa var. typica Munz
Oenothera tetraptera var. childsii L.H.Bailey
Oenothera webbiana Steud.
Xylopleurum berlandieri Spach
Xylopleurum drummondii Spach
Xylopleurum hirsutum Spach
Xylopleurum nuttallii Spach
Xylopleurum obtusifolium Spach
Xylopleurum speciosum Raim.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
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.