Soehrensia tarijensis

Plate 1 figs. a–h · 8 separate observations

Soehrensia tarijensis, photographed by Hugo Hulsberg — fig. c Hugo Hulsberg, CC0 1.0 / obs. 178109009

Soehrensia tarijensis, photographed by Naturalist Tours — fig. e Naturalist Tours, CC0 1.0 / obs. 112449404

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.

Flowering 101 in flower of 130 examined

71%

43%

83%

80%

95%

Proportion of examined Soehrensia tarijensis in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	12	17	71%	47% to 87%
Feb	3	7	43%	16% to 75%
Mar	0	0	too few examined
Apr	1	4	too few examined
May	0	0	too few examined
Jun	0	0	too few examined
Jul	0	1	too few examined
Aug	1	1	too few examined
Sep	2	2	too few examined
Oct	24	29	83%	65% to 92%
Nov	39	49	80%	66% to 89%
Dec	19	20	95%	76% to 99%

Peak flowering in Dec. Each bar is the share of Soehrensia tarijensis 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. 101 of 130 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 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 52 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.

Cereus poco Blossf.
Cereus tarijensis Vaupel
Echinopsis antezanae (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis bertramiana (Backeb.) H.Friedrich & G.D.Rowley
Echinopsis conaconensis (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis herzogiana (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis herzogiana var. totorensis (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis narvaecensis (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis orurensis (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis poco (Backeb.) H.Friedrich & G.D.Rowley
Echinopsis poco var. albiflora (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis poco var. friciana (Cárdenas) H.Friedrich & G.D.Rowley
Echinopsis tarijensis (Vaupel) H.Friedrich & G.D.Rowley
Echinopsis tarijensis subsp. bertramiana (Backeb.) M.Lowry
Echinopsis tarijensis subsp. herzogiana (Cárdenas) G.Navarro
Echinopsis tarijensis subsp. tarijensis
Echinopsis tarijensis subsp. totorensis (Cárdenas) G.Navarro
Helianthocereus antezanae (Cárdenas) Backeb.
Helianthocereus bertramianus (Backeb.) Backeb.
Helianthocereus conaconensis (Cárdenas) Backeb.
Helianthocereus herzogianus (Cárdenas) Backeb.
Helianthocereus herzogianus var. totorensis (Cárdenas) Backeb.
Helianthocereus narvaecensis (Cárdenas) Backeb.
Helianthocereus orurensis (Cárdenas) Backeb.

and 28 more.

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.

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. It has no native range either: Kew's checklist does not cover this taxon.