Beyeria viscosa

Plate 1 figs. a–h · 8 separate observations

Beyeria viscosa, photographed by krumpianking — fig. b krumpianking, CC BY 4.0 / obs. 169322279

Beyeria viscosa, photographed by Guy Taseski — fig. f Guy Taseski, CC BY 4.0 / obs. 140107762

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 5 botanical countries

Native distribution of Beyeria viscosa, 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
New South Wales	NSW	AUSTRALASIA
Queensland	QLD
South Australia	SOA
Tasmania	TAS
Western Australia	WAU

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 30 in flower of 151 examined

29%

20%

60%

11%

100%

42%

75%

Proportion of examined Beyeria viscosa in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	2	7	29%	8% to 64%
Feb	1	2	too few examined
Mar	0	4	too few examined
Apr	1	25	4%	1% to 20%
May	0	55	0%	0% to 7%
Jun	1	5	20%	4% to 62%
Jul	2	10	20%	6% to 51%
Aug	3	5	60%	23% to 88%
Sep	1	9	11%	2% to 44%
Oct	5	5	100%	57% to 100%
Nov	5	12	42%	19% to 68%
Dec	9	12	75%	47% to 91%

Peak flowering in Oct. Each bar is the share of Beyeria viscosa 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. 30 of 151 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.

Where it actually grows measured, from 472 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	2.7 °C	4.3 °C	8.1 °C
Warmest month, mean daily high	16.8 °C	20.7 °C	30.8 °C
Annual rainfall	607 mm	692 mm	963 mm
Rainfall in the driest quarter	110 mm	139 mm	186 mm

It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 472 research-grade observations of Beyeria viscosa that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 11 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.

Beyeria oblongifolia (Klotzsch) Sond.
Beyeria viscosa var. amoena Mull.Arg.
Beyeria viscosa var. genuina Mull.Arg.
Beyeria viscosa var. latifolia Benth.
Beyeria viscosa var. minor Mull.Arg.
Beyeria viscosa var. oblongifolia (Klotzsch) Mull.Arg.
Beyeria viscosa var. obovata C.T.White
Beyeria viscosa var. preissii Sond.
Calyptrostigma oblongifolium Klotzsch
Calyptrostigma viscosum (Labill.) Klotzsch
Croton viscosus Labill.

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.