Jens-Christian Svenning, CC BY, iNaturalist via GBIF · observed growing wild

Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler

Spider Cactus, spider cactus

No habitat climate 13 photographs Cactus or succulent

Every figure on this page is derived from public data by a stated rule and says its source; nothing here is written by a person or a model, except the Wikipedia passage, which is quoted and marked as such. How it is made.

Summary

Gymnocalycium denudatum is a species of Gymnocalycium from Brazil to Argentina.

Text from Wikipedia, “Gymnocalycium denudatum”, CC BY-SA 4.0, quoted as written. Kept separate from everything derived here.

About the genus · Gymnocalycium

Gymnocalycium, commonly called chin cactus, is a genus of about 70 South American species of cactus. The genus name Gymnocalycium refers to the flower buds bearing no hair or spines. In a 2023 classification of the tribe Cereeae, it was placed as the only genus in the subtribe Gymnocalyciinae, having formerly been placed in the subtribe Rebutiinae.

Text from Wikipedia, “Gymnocalycium”, CC BY-SA 4.0, quoted as written.

Family

Cactaceae

Described by

(Link & Otto) Pfeiff. ex Mittler

Native to

Brazil South, Argentina Northeast, Uruguay

Wild records

22 in range· 6 open

Also known as Cereus denudatus (Link & Otto) Hort.Berol.; Cereus denudatus (Link & Otto) Hort.Berol. ex Pfeiff.; Echinocactus denudatus Link & Otto; Echinocactus denudatus f. delaetianus (J.N.Haage) Schelle; Echinocactus denudatus f. octogonus (K.Schum.) Schelle and 19 more.

Cultivation

Grouped as a cactus or succulent by the genus Gymnocalycium, which is reliably one kind of plant (archetype table). The table holds no figure for this group, which spans too much for one minimum, and no habitat climate is derived yet; no cold floor is given, and no prose comes from the table.

Nothing derived: no habitat climate for this species, and the archetype table has no figure for its genus or family.

Climate across the habitat

No habitat climate can be derived: Only 2 distinct land cells of the climate grid hold an in-range record; three are needed for an envelope.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.

Openly licensed records inside the range, framed on where they fall.

NativeBrazil South, Argentina Northeast, Uruguay

Kew's description“succulent subshrub” · “subtropical”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Map marker-32.327, -53.822 · in the densest population, 17 records (77% of those in range)

Evidence usedThe map marker rests on all 22 georeferenced records inside the native range; the map shows only the 6 openly licensed ones, which alone would put the marker 106 km away. 2 records outside the range (gardens, roadsides, misidentifications) ignored. No climate envelope is derived for this species. 20 in-range records are placed to worse than 10 km and stay on the map but off the climate.

The map markerthe map marker: the openly licensed record nearest the middle of the densest 1° population of the 22 in-range records; it decides nothing.

Photographs

Photographs: Jens-Christian Svenning, CC BY, iNaturalist via GBIF; Franco Richieri, CC BY, iNaturalist via GBIF; Fernando Sessegolo, CC0, iNaturalist via GBIF (2); Magdalena Carabio Foti, CC BY, iNaturalist via GBIF (4).

Photographs: iNaturalist did not answer when this page was built; what is shown came from the sources that did.

Papers naming this species

Works whose title or abstract names Gymnocalycium denudatum, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Specialized solitary bees as effective pollinators of South Brazilian species of Notocactus and Gymnocalycium (Cactaceae)

Clemens Schlindwein, Dieter Wittmann (1995) · Bradleya

Occurrence Download