Cardamine diphylla (Two-leaved Toothwort)

Plate 1 figs. a–h

Cardamine diphylla, photographed by Quinten Wiegersma — fig. a Quinten Wiegersma, CC BY 4.0 / 2022-05-20 / obs. 203747560

Cardamine diphylla, photographed by Alison Northup — fig. b Alison Northup, CC BY 4.0 / obs. 204084633

Cardamine diphylla, photographed by Lynn Harper — fig. e Lynn Harper, CC0 1.0 / obs. 199402136

Cardamine diphylla, photographed by Tom Scavo — fig. f Tom Scavo, CC BY 4.0 / obs. 199952477

Cardamine diphylla, photographed by Loopy30 — fig. g Loopy30, CC BY-SA 4.0 / obs. 199232275

Cardamine diphylla, photographed by Henrique Pacheco — fig. h Henrique Pacheco, CC BY 4.0 / obs. 199215501

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 = 1,623 observations

467

1111

Flowering observations of Cardamine diphylla by month
Month	Observations
Jan	0
Feb	0
Mar	21
Apr	467
May	1111
Jun	24
Jul	0
Aug	0
Sep	0
Oct	0
Nov	0
Dec	0

Peak flowering in May, from 1,623 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 3 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.

Dentaria bifolia Stokes
Dentaria diphylla Michx.
Dentaria incisa Small

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.