Homalanthus populifolius

Plate 1 figs. a–h · 8 separate observations

Homalanthus populifolius, photographed by Tony Rebelo — fig. d Tony Rebelo, CC BY-SA 4.0 / obs. 200965605

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 7 botanical countries

Native distribution of Homalanthus populifolius, 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. Regions too small to draw at this scale are marked with a dot.

Region	TDWG code	Continent
New South Wales	NSW	AUSTRALASIA
Norfolk Is.	NFK
Queensland	QLD
Victoria	VIC
Bismarck Archipelago	BIS	ASIA-TROPICAL
New Guinea	NWG
Solomon Is.	SOL

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 60 in flower of 189 examined

37%

19%

17%

36%

20%

46%

33%

32%

55%

50%

Proportion of examined Homalanthus populifolius in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	7	19	37%	19% to 59%
Feb	3	16	19%	7% to 43%
Mar	3	18	17%	6% to 39%
Apr	0	8	0%	0% to 32%
May	1	14	7%	1% to 31%
Jun	4	11	36%	15% to 65%
Jul	2	10	20%	6% to 51%
Aug	6	13	46%	23% to 71%
Sep	6	18	33%	16% to 56%
Oct	7	22	32%	16% to 53%
Nov	11	20	55%	34% to 74%
Dec	10	20	50%	30% to 70%

Peak flowering in Nov. Each bar is the share of Homalanthus populifolius 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. 60 of 189 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 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 6 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.

Carumbium pallidum Müll.Arg.
Carumbium platyneuron Müll.Arg.
Carumbium populifolium (Graham) Benth. & F.Muell.
Carumbium populifolium Reinw.
Carumbium sieberi Müll.Arg.
Homalanthus goodenoviensis Airy Shaw

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.