Gentiana calycosaGriseb.

Mountain Bog Gentian

WFO wfo-0000697118 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Gentiana calycosa, photographed by Paul McClellan
fig. a Paul McClellan, CC BY 4.0 / 2021-08-18 / obs. 151854205
Gentiana calycosa, photographed by Diego Blanco
fig. b Diego Blanco, CC0 1.0 / obs. 154790675
Gentiana calycosa, photographed by Matt Lavin
fig. c Matt Lavin, CC BY 4.0 / obs. 172984812
Gentiana calycosa, photographed by Ben Meredyk
fig. d Ben Meredyk, CC BY 4.0 / obs. 153836386
Gentiana calycosa, photographed by Albert Myghal
fig. e Albert Myghal, CC BY-SA 4.0 / obs. 153850881
Gentiana calycosa, photographed by James H. Thomas
fig. f James H. Thomas, CC BY 4.0 / obs. 202215431
Gentiana calycosa, photographed by John Brew
fig. g John Brew, CC BY 4.0 / obs. 151418759
Gentiana calycosa, photographed by John Brew
fig. h John Brew, CC BY 4.0 / obs. 151418632

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 = 1,076 observations

Peak flowering in Aug, from 1,076 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 20 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.

  • Dasystephana calycosa (Griseb.) Rydb.
  • Dasystephana calycosa var. xantha (A.Nelson) A.Nelson
  • Dasystephana monticola (Rydb.) Rydb.
  • Dasystephana obtusiloba Rydb.
  • Gentiana calycosa f. alpina Herder
  • Gentiana calycosa subsp. asepala Maguire
  • Gentiana calycosa subsp. typica Maguire
  • Gentiana calycosa var. asepala (Maguire) C.L.Hitchc.
  • Gentiana calycosa var. calycosa
  • Gentiana calycosa var. monticola Rydb.
  • Gentiana calycosa var. obtusiloba (Rydb.) C.L.Hitchc.
  • Gentiana calycosa var. stricta Griseb.
  • Gentiana calycosa var. xantha A.Nelson
  • Gentiana cusickii Gand.
  • Gentiana gormanii Howell
  • Gentiana idahoensis Gand.
  • Gentiana myrsinites Gand.
  • Gentiana obtusiloba (Rydb.) Hultén
  • Gentiana saxicola English
  • Pneumonanthe calycosa (Griseb.) Greene

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.