Lysimachia borealis(Raf.) U.Manns & Anderb.

northern starflower

WFO wfo-0000744187 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Lysimachia borealis, photographed by Louis Imbeau
fig. a Louis Imbeau, CC BY 4.0 / 2022-06-11 / obs. 205340912
Lysimachia borealis, photographed by Pierre Cartier
fig. b Pierre Cartier, CC0 1.0 / obs. 205008301
Lysimachia borealis, photographed by Mary Krieger
fig. c Mary Krieger, CC BY 4.0 / obs. 205024145
Lysimachia borealis, photographed by Mary Krieger
fig. d Mary Krieger, CC BY 4.0 / obs. 205024026
Lysimachia borealis, photographed by Lynn Harper
fig. e Lynn Harper, CC0 1.0 / obs. 203960905
Lysimachia borealis, photographed by Bernie Paquette
fig. f Bernie Paquette, CC BY 4.0 / obs. 204333065
Lysimachia borealis, photographed by Steven Lamonde
fig. g Steven Lamonde, CC BY 4.0 / obs. 206017451
Lysimachia borealis, photographed by Jackson Kusack
fig. h Jackson Kusack, CC0 1.0 / obs. 203674537

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 = 10,658 observations

Peak flowering in May, from 10,658 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 10 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.

  • Lysimachia trientalis var. americana (Pursh) Klatt
  • Trientalis americana Pursh
  • Trientalis borealis Raf.
  • Trientalis borealis f. borealis
  • Trientalis borealis f. pluriverticillata Vict. & Roll.-Germ.
  • Trientalis borealis f. ramosa Vict.
  • Trientalis borealis f. tenuifolia (House) Lepage
  • Trientalis borealis var. borealis
  • Trientalis borealis var. tenuifolia House
  • Trientalis europaea var. americana Pers.

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.