Strombocactus

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Cactaceae
Subfamilia: Cactoideae
Tribus: Cacteae
Genus: Strombocactus
Species: S. corregidorae – S. disciformis
Name

Strombocactus Britton & Rose, Cactaceae 3: 106 (1922).

Type species: Strombocactus disciformis (DC.) Britton & Rose

Synonyms

Homotypic
Ariocarpus subg. Strombocactus (Britton & Rose) Halda, Acta Mus. Richnov., Sect. Nat. 5(1): 37 (1998).

Distribution
Native distribution areas:

Continental: Northern America
Regional: Mexico
Mexico Northeast

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Britton, N.L. & Rose, J.N. 1922. The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family. Vol. 3. 255 pp. + 23 pl. Carnegie Institution of Washington. BHL PDF Reference page. : 3: 106.

Links

Govaerts, R. et al. 2021. Strombocactus in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Mar 28. Reference page.
International Plant Names Index. 2021. Strombocactus. Published online. Accessed: Mar 28 2021.
Tropicos.org 2021. Strombocactus. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Mar 28.
Hassler, M. 2021. Strombocactus. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Mar 28. Reference page.
USDA, ARS, Germplasm Resources Information Network. Strombocactus in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names

Strombocactus disciformis is a rare species of cacti and the only species of the genus Strombocactus. The plant originates from Central and Northeast Mexico.

Description

Strombocactus is a monotypic genus with a strong turnip-like root, a small, depressed, roughly spherical stem covered with spirally arranged overlapping tubercles, each with a spine-bearing areole at its tip. Flowers come from new growth at the crown, and the cactus's small seeds are difficult to see with the naked eye.[1]
Taxonomy

The species has several forms and subspecies:

Strombocactus disciformis f. cristata
Strombocactus disciformis ssp. esperanzae

Conservation status

Both subspecies are classified as Vulnerable on the IUCN Red List, which states that it has a limited range and "is experiencing a decline in mature individuals due to illegal overcollection". Both subspecies are also contained in Appendix 1 of CITES species (Convention on International Trade in Endangered species) as at June 2013.
References

Venning, Frank D. Cacti (A Golden Guide). Racine, Wisconsin: Western Publishing Company, Inc. p. 155.