Trachymene incisa

Plate 1 figs. a–h · 8 separate observations

Trachymene incisa, photographed by Thomas Mesaglio — fig. b Thomas Mesaglio, CC BY 4.0 / obs. 196466435

Trachymene incisa, photographed by ronavery — fig. g ronavery, CC BY 4.0 / obs. 168584495

Trachymene incisa, photographed by Gary Williams — fig. h Gary Williams, CC BY-SA 4.0 / obs. 161404685

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

Native distribution of Trachymene incisa, 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
New Guinea	NWG	ASIA-TROPICAL

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 583 in flower of 672 examined

96%

92%

84%

83%

77%

73%

64%

54%

75%

94%

96%

Proportion of examined Trachymene incisa in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	90	94	96%	90% to 98%
Feb	67	70	96%	88% to 99%
Mar	58	63	92%	83% to 97%
Apr	47	56	84%	72% to 91%
May	40	48	83%	70% to 91%
Jun	23	30	77%	59% to 88%
Jul	16	22	73%	52% to 87%
Aug	28	44	64%	49% to 76%
Sep	15	28	54%	36% to 70%
Oct	30	40	75%	60% to 86%
Nov	66	70	94%	86% to 98%
Dec	103	107	96%	91% to 99%

Peak flowering in Dec. Each bar is the share of Trachymene incisa 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. 583 of 672 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 7 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.

Didiscus albiflorus DC.
Didiscus grandiceps Domin
Didiscus incisus (Rudge) Hook.
Didiscus incisus subsp. grandiceps Domin
Didiscus pimpinellifolius Domin
Trachymene incisa var. pilosa Benth.
Trachymene pimpinellifolia (Domin) B.L.Burtt

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.