Helonias umbellata

Plate 1 figs. a–h · 8 separate observations

Helonias umbellata, photographed by 黃美滿 — fig. b 黃美滿, CC BY 4.0 / obs. 113002915

Helonias umbellata, photographed by 葉子 — fig. c 葉子, CC0 1.0 / obs. 111335044

Helonias umbellata, photographed by Jacy Chen — fig. d Jacy Chen, CC BY 4.0 / obs. 110680747

Helonias umbellata, photographed by Pieter Pelser — fig. g Pieter Pelser, CC BY 4.0 / obs. 30091282

Helonias umbellata, photographed by Cynthia Su — fig. h Cynthia Su, CC BY 4.0 / obs. 19352583

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 1 botanical country

Native distribution of Helonias umbellata, 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
Taiwan	TAI	ASIA-TEMPERATE

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 160 in flower of 288 examined

73%

97%

61%

18%

25%

Proportion of examined Helonias umbellata in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	40	55	73%	60% to 83%
Feb	73	75	97%	91% to 99%
Mar	38	62	61%	49% to 72%
Apr	7	40	18%	9% to 32%
May	0	15	0%	0% to 20%
Jun	0	7	0%	0% to 35%
Jul	0	4	too few examined
Aug	0	7	0%	0% to 35%
Sep	0	5	0%	0% to 43%
Oct	0	4	too few examined
Nov	0	6	0%	0% to 39%
Dec	2	8	25%	7% to 59%

Peak flowering in Feb. Each bar is the share of Helonias umbellata 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. 160 of 288 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 2 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 10 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.

Heloniopsis acutifolia Hayata
Heloniopsis arisanensis Hayata ex Honda
Heloniopsis taiwaniana S.S.Ying
Heloniopsis umbellata Baker
Hexonix acutifolia (Hayata) F.T.Wang & Tang
Hexonix arisanensis (Hayata ex Honda) F.T.Wang & Tang
Hexonix umbellata (Baker) F.T.Wang & Tang
Sugerokia acutifolia (Hayata) Koidz.
Sugerokia arisanensis (Hayata ex Honda) Koidz.
Sugerokia umbellata (Baker) Koidz.

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.
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.