Xanthosia stellataJ.M.Hart & Henwood

WFO wfo-0000428770 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 3 observations

This species has been photographed under an open licence only 3 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Xanthosia stellata, photographed by Greg Tasney
fig. a Greg Tasney, CC BY-SA 4.0 / 2021-10-10 / obs. 162619750

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 3 botanical countries

Regions where Xanthosia stellata is native: New South Wales, Queensland, Victoria New South WalesQueenslandVictoria
Native distribution of Xanthosia stellata, 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.
RegionTDWG codeContinent
New South Wales NSW AUSTRALASIA
Queensland QLD
Victoria VIC

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 98 in flower of 158 examined

Proportion of examined Xanthosia stellata in flower, by month
Month In flower Examined Share 95% interval
Jan 4 10 40% 17% to 69%
Feb 5 12 42% 19% to 68%
Mar 7 16 44% 23% to 67%
Apr 3 12 25% 9% to 53%
May 12 21 57% 37% to 76%
Jun 2 6 33% 10% to 70%
Jul 7 11 64% 35% to 85%
Aug 7 12 58% 32% to 81%
Sep 8 9 89% 56% to 98%
Oct 13 13 100% 77% to 100%
Nov 20 23 87% 68% to 95%
Dec 10 13 77% 50% to 92%

Peak flowering in Oct. Each bar is the share of Xanthosia stellata 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. 98 of 158 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.

Where it actually grows measured, from 171 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 1.1 °C 2.7 °C 7.8 °C
Warmest month, mean daily high 23.2 °C 24.4 °C 28.2 °C
Annual rainfall 839 mm 1,039 mm 1,188 mm
Rainfall in the driest quarter 108 mm 186 mm 213 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 171 research-grade observations of Xanthosia stellata 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.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. 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.