Coryphantha potosiana(Jacobi) Glass & R.A.Foster

WFO wfo-0001255758 Accepted WFO 2026-06 4 photographs CC BY

Plate 1 figs. a–d · 4 separate observations

Coryphantha potosiana, photographed by P Gonzalez Zamora
fig. a P Gonzalez Zamora, CC BY 4.0 / 2021-03-21 / obs. 117148004
Coryphantha potosiana, photographed by P Gonzalez Zamora
fig. b P Gonzalez Zamora, CC BY 4.0 / obs. 116863317
Coryphantha potosiana, photographed by Ad Konings
fig. c Ad Konings, CC BY 4.0 / obs. 76423312
Coryphantha potosiana, photographed by Ad Konings
fig. d Ad Konings, CC BY 4.0 / obs. 76423817

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.

Where it actually grows measured, from 43 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 3.9 °C 5.4 °C 6.9 °C
Warmest month, mean daily high 25.1 °C 26.5 °C 28.0 °C
Annual rainfall 382 mm 441 mm 476 mm
Rainfall in the driest quarter 32 mm 36 mm 39 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 43 research-grade observations of Coryphantha potosiana 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 Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.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 2 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.

  • Coryphantha potosiana (Jacobi) Glass & R.A.Foster ex Rowley
  • Mammillaria potosiana Jacobi

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.

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.