Gentiana clausaRaf.

bottle gentian

WFO wfo-0000697236 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Gentiana clausa, photographed by Bernie Paquette
fig. a Bernie Paquette, CC BY 4.0 / 2021-09-26 / obs. 174385417
Gentiana clausa, photographed by Researcher, biologist, wildlife frolicker
fig. b Researcher, biologist, wildlife frolicker, CC0 1.0 / obs. 159962716
Gentiana clausa, photographed by Jonathan Bright
fig. c Jonathan Bright, CC BY-SA 4.0 / obs. 157280773
Gentiana clausa, photographed by Betsy Lambert
fig. d Betsy Lambert, CC BY 4.0 / obs. 160002026
Gentiana clausa, photographed by Laura J. Costello
fig. e Laura J. Costello, CC BY 4.0 / obs. 186906658
Gentiana clausa, photographed by Lynn Harper
fig. f Lynn Harper, CC0 1.0 / obs. 155339453
Gentiana clausa, photographed by Lynn Harper
fig. g Lynn Harper, CC0 1.0 / obs. 156566790
Gentiana clausa, photographed by Lynn Harper
fig. h Lynn Harper, CC0 1.0 / obs. 155341730

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 = 745 observations

Peak flowering in Sep, from 745 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 4 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.

  • Gentiana andrewsii var. intermedia Kusn.
  • Gentiana clausa f. albiflora House
  • Pneumonanthe clausa (Raf.) Greene
  • Xolemia clausa (Raf.) Raf.

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.