Ipheion uniflorum (spring star)

Plate 1 figs. a–h · 8 separate observations

Ipheion uniflorum, photographed by jomurphy — fig. a jomurphy, CC0 1.0 / 2022-04-30 / obs. 192229041

Ipheion uniflorum, photographed by Josiah Ritchie — fig. b Josiah Ritchie, CC BY-SA 4.0 / obs. 188098946

Ipheion uniflorum, photographed by mami_t_t — fig. c mami_t_t, CC BY 4.0 / obs. 187027216

Ipheion uniflorum, photographed by Allen Browne — fig. e Allen Browne, CC0 1.0 / obs. 187189946

Ipheion uniflorum, photographed by Lindsey G. — fig. g Lindsey G., CC BY 4.0 / obs. 186303821

Ipheion uniflorum, photographed by Jon Mortin — fig. h Jon Mortin, CC BY 4.0 / obs. 185891954

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 2 botanical countries

Native distribution of Ipheion uniflorum, 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
Argentina Northeast	AGE	SOUTHERN AMERICA
Uruguay	URU

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 810 in flower of 811 examined

100%

91%

100%

Proportion of examined Ipheion uniflorum in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	28	28	100%	88% to 100%
Mar	323	323	100%	99% to 100%
Apr	207	207	100%	98% to 100%
May	10	11	91%	62% to 98%
Jun	5	5	100%	57% to 100%
Jul	28	28	100%	88% to 100%
Aug	68	68	100%	95% to 100%
Sep	121	121	100%	97% to 100%
Oct	20	20	100%	84% to 100%
Nov	0	0	too few examined
Dec	0	0	too few examined

Peak flowering in Feb. Each bar is the share of Ipheion uniflorum 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. 810 of 811 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 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 32 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.

Beauverdia uniflora (Lindl.) Herter
Beauverdia uniflora f. alba Herter
Beauverdia uniflora f. roseo-plena Herter
Beauverdia uniflora f. tenuipetala Herter
Beauverdia uniflora f. tenuitepala Herter
Brodiaea uniflora Engl.
Brodiaea uniflora var. alba Weathers
Brodiaea uniflora var. conspicua Baker
Brodiaea uniflora var. violacea Weathers
Hookera uniflora (Lindl.) Kuntze
Hookera uniflora f. violacea Voss
Ipheion uniflorum f. album (Weathers) Stearn
Ipheion uniflorum f. conspicuum (Baker) Stearn
Ipheion uniflorum f. roseo-plenum (Herter) Stearn
Ipheion uniflorum f. tenuitepalum (Herter) Stearn
Ipheion uniflorum f. violaceum (Voss) Stearn
Leucocoryne uniflora (Lindl.) Greene
Milla bonariensis Gillies ex Baker
Milla conspicua (Baker) N.E.Br.
Milla uniflora Graham
Milla uniflora var. conspicua (Baker) Baker
Tristagma peregrinans Ravenna
Tristagma uniflorum (Lindl.) Traub
Tristagma uniflorum f. album (Herter) Traub

and 8 more.

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.