Triteleia grandiflora (largeflower triteleia)

Plate 1 figs. a–h · 8 separate observations

Triteleia grandiflora, photographed by James H. Thomas — fig. a James H. Thomas, CC BY 4.0 / 2022-05-29 / obs. 202209510

Triteleia grandiflora, photographed by Michael Bunsen — fig. b Michael Bunsen, CC0 1.0 / obs. 188936744

Triteleia grandiflora, photographed by Dominic Gentilcore — fig. c Dominic Gentilcore, CC BY 4.0 / obs. 186176591

Triteleia grandiflora, photographed by Drew Meyer — fig. d Drew Meyer, CC0 1.0 / obs. 134885870

Triteleia grandiflora, photographed by Dan Johnson — fig. e Dan Johnson, CC BY 4.0 / obs. 133275042

Triteleia grandiflora, photographed by Ellyne Geurts — fig. f Ellyne Geurts, CC0 1.0 / obs. 157611390

Triteleia grandiflora, photographed by Bryn — fig. h Bryn, CC BY 4.0 / obs. 132378620

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.

Native range 9 botanical countries

Native distribution of Triteleia grandiflora, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
British Columbia	BRC	NORTHERN AMERICA
California	CAL
Colorado	COL
Idaho	IDA
Montana	MNT
Oregon	ORE
Utah	UTA
Washington	WAS
Wyoming	WYO

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 1,628 in flower of 1,816 examined

25%

92%

90%

89%

58%

Proportion of examined Triteleia grandiflora in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	2	8	25%	7% to 59%
Apr	319	346	92%	89% to 95%
May	875	967	90%	88% to 92%
Jun	412	461	89%	86% to 92%
Jul	18	31	58%	41% to 74%
Aug	1	2	too few examined
Sep	0	0	too few examined
Oct	0	0	too few examined
Nov	0	0	too few examined
Dec	1	1	too few examined

Peak flowering in Apr. Each bar is the share of Triteleia grandiflora observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 1,628 of 1,816 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 15 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.

Brodiaea bicolor Suksd.
Brodiaea douglasii S.Watson
Brodiaea douglasii var. howellii (S.Watson) M.Peck
Brodiaea grandiflora (Lindl.) J.F.Macbr.
Brodiaea grandiflora var. major Benth. ex Baker
Brodiaea howellii S.Watson
Hookera bicolor (Suksd.) Piper
Hookera douglasii (S.Watson) Piper
Hookera howellii (S.Watson) Piper
Milla grandiflora (Lindl.) Baker
Triteleia bicolor (Suksd.) A.Heller
Triteleia grandiflora var. grandiflora
Triteleia grandiflora var. howellii (S.Watson) Hoover
Triteleia howellii (S.Watson) Greene
Tulophos grandiflora (Lindl.) Raf.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.