Tetraneuris herbacea (eastern fournerved daisy)

Plate 1 figs. a–h · 8 separate observations

Tetraneuris herbacea, photographed by Margaret Northfield — fig. a Margaret Northfield, CC BY 4.0 / 2022-06-02 / obs. 202833831

Tetraneuris herbacea, photographed by Christopher Zacharias — fig. b Christopher Zacharias, CC BY 4.0 / obs. 195716203

Tetraneuris herbacea, photographed by Lisa Wiencek Gerbec — fig. c Lisa Wiencek Gerbec, CC BY 4.0 / obs. 192631373

Tetraneuris herbacea, photographed by Elias — fig. d Elias, CC BY 4.0 / obs. 169588550

Tetraneuris herbacea, photographed by Kathleen Houlahan Chayer — fig. e Kathleen Houlahan Chayer, CC0 1.0 / obs. 133704301

Tetraneuris herbacea, photographed by Ryan Sorrells — fig. h Ryan Sorrells, CC BY 4.0 / obs. 122397468

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 Tetraneuris herbacea, 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
Illinois	ILL	NORTHERN AMERICA
Ohio	OHI
Ontario	ONT

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 654 in flower of 878 examined

77%

92%

80%

14%

15%

33%

67%

Proportion of examined Tetraneuris herbacea in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	2	too few examined
Mar	0	0	too few examined
Apr	67	87	77%	67% to 85%
May	405	438	92%	90% to 95%
Jun	164	205	80%	74% to 85%
Jul	1	66	2%	0% to 8%
Aug	5	35	14%	6% to 29%
Sep	4	26	15%	6% to 34%
Oct	4	12	33%	14% to 61%
Nov	4	6	67%	30% to 90%
Dec	0	1	too few examined

Peak flowering in May. Each bar is the share of Tetraneuris herbacea 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. 654 of 878 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 4 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.

Also published as 4 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.

Actinea herbacea B.L.Rob.
Hymenoxys acaulis var. glabra (A.Gray) K.F.Parker
Hymenoxys herbacea (Greene) Cusick
Hymenoxys herbacea (Greene) Cronquist

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.
Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
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.