Echinocereus santaritensis

Plate 1 figs. a–h · 8 separate observations

Echinocereus santaritensis, photographed by Sean Krieg — fig. b Sean Krieg, CC BY 4.0 / obs. 199116951

Echinocereus santaritensis, photographed by sprcrkwild — fig. c sprcrkwild, CC BY 4.0 / obs. 201276651

Echinocereus santaritensis, photographed by er-birds — fig. d er-birds, CC BY 4.0 / obs. 197120570

Echinocereus santaritensis, photographed by Elliot Kulakow — fig. f Elliot Kulakow, CC BY 4.0 / obs. 193148544

Echinocereus santaritensis, photographed by Reid Hardin — fig. g Reid Hardin, CC BY 4.0 / obs. 179782670

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

Native distribution of Echinocereus santaritensis, 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
Arizona	ARI	NORTHERN AMERICA
Mexico Northeast	MXE
Mexico Northwest	MXN
New Mexico	NWM

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.

Where it actually grows measured, from 1,994 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-6.1 °C	-2.1 °C	2.0 °C
Warmest month, mean daily high	25.7 °C	29.5 °C	33.4 °C
Annual rainfall	422 mm	554 mm	622 mm
Rainfall in the driest quarter	32 mm	43 mm	56 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,994 research-grade observations of Echinocereus santaritensis 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.

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.

Echinocereus bacanorensis (W.Rischer & Trocha) W.Blum
Echinocereus coccineus subsp. santaritensis (W.Blum & Rutow) M.A.Baker
Echinocereus klapperi subsp. bacanorensis (W.Rischer & Trocha) W.Rischer
Echinocereus salm-dyckianus subsp. bacanorensis W.Rischer & Trocha

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.