Dillwynia retorta(J.C.Wendl.) Druce

WFO wfo-0000185184 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Dillwynia retorta, photographed by Thomas Mesaglio
fig. a Thomas Mesaglio, CC BY 4.0 / 2021-10-24 / obs. 165772000

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 4 botanical countries

Regions where Dillwynia retorta is native: New South Wales, Queensland, South Australia, Victoria New South WalesQueenslandSouth AustraliaVictoria
Native distribution of Dillwynia retorta, 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
South Australia SOA
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 212 in flower of 222 examined

Proportion of examined Dillwynia retorta in flower, by month
Month In flower Examined Share 95% interval
Jan 6 8 75% 41% to 93%
Feb 3 4 too few examined
Mar 4 5 80% 38% to 96%
Apr 1 1 too few examined
May 3 3 too few examined
Jun 6 6 100% 61% to 100%
Jul 35 36 97% 86% to 100%
Aug 57 58 98% 91% to 100%
Sep 34 35 97% 85% to 99%
Oct 37 38 97% 87% to 100%
Nov 17 18 94% 74% to 99%
Dec 9 10 90% 60% to 98%

Peak flowering in Jun. Each bar is the share of Dillwynia retorta 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. 212 of 222 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.

Where it actually grows measured, from 714 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 2.0 °C 9.0 °C 12.6 °C
Warmest month, mean daily high 23.2 °C 25.3 °C 27.8 °C
Annual rainfall 898 mm 1,149 mm 1,487 mm
Rainfall in the driest quarter 135 mm 194 mm 227 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 714 research-grade observations of Dillwynia retorta 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 13 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.

  • Dillwynia ericifolia Sm.
  • Dillwynia ericifolia var. deflexa Blakely
  • Dillwynia ericifolia var. normalis Benth.
  • Dillwynia ericifolia var. peduncularis (Benth.) Benth.
  • Dillwynia filifolia Endl.
  • Dillwynia floribunda var. bicolor Regel
  • Dillwynia microphylla Sieber ex DC.
  • Dillwynia parvifolia var. parvifolia
  • Dillwynia peduncularis Benth.
  • Dillwynia peduncularis var. racemosa Blakely
  • Dillwynia seriphioides Endl.
  • Eutaxia strangeana Turcz.
  • Pultenaea retorta J.C.Wendl.

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.