Collomia grandiflora (grand collomia)

Plate 1 figs. a–h

Collomia grandiflora, photographed by Alan Rockefeller — fig. a Alan Rockefeller, CC BY 4.0 / 2022-06-11 / obs. 205324855

Collomia grandiflora, photographed by Arvel Hernandez — fig. b Arvel Hernandez, CC BY 4.0 / obs. 201085326

Collomia grandiflora, photographed by James H. Thomas — fig. c James H. Thomas, CC BY 4.0 / obs. 203718871

Collomia grandiflora, photographed by Steve Woodward — fig. d Steve Woodward, CC0 1.0 / obs. 146458639

Collomia grandiflora, photographed by Jenny Saito — fig. e Jenny Saito, CC BY 4.0 / obs. 175128540

Collomia grandiflora, photographed by Peter Garber — fig. f Peter Garber, CC0 1.0 / obs. 137751311

Collomia grandiflora, photographed by Don Loarie — fig. g Don Loarie, CC BY 4.0 / obs. 140814718

Collomia grandiflora, photographed by Dominic Gentilcore — fig. h Dominic Gentilcore, CC BY 4.0 / obs. 143284268

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 = 1,091 observations

169

652

227

Flowering observations of Collomia grandiflora by month
Month	Observations
Jan	12
Feb	0
Mar	1
Apr	11
May	169
Jun	652
Jul	227
Aug	11
Sep	3
Oct	0
Nov	1
Dec	4

Peak flowering in Jun, from 1,091 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 16 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.

Collomia grandiflora f. axillaris (A.Nelson) Wherry
Collomia grandiflora f. cryptantha (Regel ex A.Gray) Wherry
Collomia grandiflora f. diffusa (Mulford) Wherry
Collomia grandiflora f. scabra (Greene) Wherry
Collomia grandiflora f. tenuiflora (Benth.) Wherry
Collomia grandiflora prol. europaea P.Fourn.
Collomia grandiflora subsp. diffusa (Mulford) Piper
Collomia grandiflora var. axillaris A.Nelson
Collomia grandiflora var. cryptantha Regel ex A.Gray
Collomia grandiflora var. cryptantha Regel
Collomia grandiflora var. diffusa (Mulford) Piper
Collomia grandiflora var. tenuiflora Benth.
Collomia scabra Greene
Gilia grandiflora (Douglas ex Lindl.) A.Gray
Gilia grandiflora var. axillaris A.Nelson & J.F.Macbr.
Gilia grandiflora var. diffusa Mulford

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.

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.