Frasera speciosaDouglas ex Griseb.

monument plant

WFO wfo-0000692198 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Frasera speciosa, photographed by Annika Lindqvist
fig. a Annika Lindqvist, CC BY 4.0 / 2022-05-24 / obs. 203575002
Frasera speciosa, photographed by Andrew Tree
fig. b Andrew Tree, CC BY 4.0 / obs. 145439128
Frasera speciosa, photographed by Jesse Rorabaugh
fig. c Jesse Rorabaugh, CC0 1.0 / obs. 152839094
Frasera speciosa, photographed by Diego Blanco
fig. d Diego Blanco, CC0 1.0 / obs. 154790574
Frasera speciosa, photographed by Christine Braaten
fig. e Christine Braaten, CC0 1.0 / obs. 157525585
Frasera speciosa, photographed by Jesse Rorabaugh
fig. f Jesse Rorabaugh, CC0 1.0 / obs. 151930390
Frasera speciosa, photographed by Reid Hardin
fig. g Reid Hardin, CC BY 4.0 / obs. 144564124
Frasera speciosa, photographed by Zac Peterson
fig. h Zac Peterson, CC BY 4.0 / obs. 159381318

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 = 1,236 observations

Peak flowering in Jul, from 1,236 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.

  • Frasera ampla Greene
  • Frasera angustifolia (Rydb.) Rydb.
  • Frasera macrophylla Greene
  • Frasera scabra (M.E.Jones) Rydb.
  • Frasera speciosa var. angustifolia Rydb.
  • Frasera speciosa var. scabra M.E.Jones
  • Frasera speciosa var. stenosepala Rydb.
  • Frasera stenosepala (Rydb.) Rydb.
  • Frasera venosa Greene
  • Swertia radiata (Kellogg) Kuntze
  • Swertia radiata var. macrophylla (Greene) H.St.John
  • Swertia radiata var. maderensis Henrickson
  • Tessaranthium angustifolium (Rydb.) Rydb.
  • Tessaranthium macrophyllum (Greene) Rydb.
  • Tessaranthium radiatum Kellogg
  • Tessaranthium scabrum (M.E.Jones) Rydb.
  • Tessaranthium speciosum (Douglas ex Griseb.) Rydb.
  • Tessaranthium stenosepalum (Rydb.) Rydb.
  • Tesseranthium angustifolium Rydb.
  • Tesseranthium macrophyllum Rydb.
  • Tesseranthium radiatum Kellogg
  • Tesseranthium speciosum Rydb.
  • Tesseranthium stenosepalum Rydb.

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.