Calopogon tuberosus(L.) Britton, Sterns & Poggenb.

Tuberous Grasspink

WFO wfo-0000780265 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Calopogon tuberosus, photographed by Joseph Aubert
fig. a Joseph Aubert, CC BY 4.0 / 2022-06-04 / obs. 204548460
Calopogon tuberosus, photographed by Louis Imbeau
fig. b Louis Imbeau, CC BY 4.0 / obs. 149382919
Calopogon tuberosus, photographed by Joseph Aubert
fig. c Joseph Aubert, CC BY 4.0 / obs. 204542354
Calopogon tuberosus, photographed by Louis Imbeau
fig. d Louis Imbeau, CC BY 4.0 / obs. 148371692
Calopogon tuberosus, photographed by Joseph Aubert
fig. e Joseph Aubert, CC BY 4.0 / obs. 204546022
Calopogon tuberosus, photographed by Howard Williams
fig. f Howard Williams, CC BY-SA 4.0 / obs. 147237722
Calopogon tuberosus, photographed by Jake McCumber
fig. g Jake McCumber, CC BY 4.0 / obs. 143995856
Calopogon tuberosus, photographed by Louis Imbeau
fig. h Louis Imbeau, CC BY 4.0 / obs. 148373425

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 = 3,670 observations

Peak flowering in May, from 3,670 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 25 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.

  • Bletia tuberosa (L.) Ames
  • Calopogon pulchellus (Salisb.) R.Br.
  • Calopogon pulchellus Fernald
  • Calopogon pulchellus f. albiflorus (Britton) Fernald
  • Calopogon pulchellus f. latifolius H.St.John
  • Calopogon pulchellus var. latifolius (H.St.John) Fernald
  • Calopogon pulchellus var. simpsonii (Small) Ames ex Correll
  • Calopogon tuberosus f. albiflorus Britton
  • Calopogon tuberosus f. niveus P.M.Br.
  • Calopogon tuberosus var. latifolius (H.St.John) B.Boivin
  • Calopogon tuberosus var. latifolius Boivin
  • Cathea pulchella (Salisb.) Salisb.
  • Cathea pulchella f. albiflora (Britton) House
  • Cathea pulchella f. latifolia (Britton) House
  • Cathea pulchella f. linearifolia House
  • Cathea tuberosa (L.) Morong
  • Cymbidium pulchellum (Salisb.) Sw.
  • Helleborine tuberosa (L.) Kuntze
  • Limodorum pulchellum Salisb.
  • Limodorum simpsonii Small
  • Limodorum tuberosum L.
  • Limodorum tuberosum f. albiflorum House
  • Limodorum tuberosum f. latifolium (H.St.John) House
  • Limodorum tuberosum f. linariifolium House

and 1 more.

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.