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

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Strombocactus disciformis
Strombocactus disciformis ssp. esperanzae
Conservation status
Vulnerable  (IUCN 3.1)
CITES Appendix I (CITES)[1]
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Core eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Tribe:	Cacteae
Genus:	Strombocactus Britton & Rose
Species:	S. disciformis
Binomial name
Strombocactus disciformis (DC.) Britton & Rose
Synonyms
Ariocarpus disciformis (DC.) Marshall Ariocarpus disciformis ssp. jarmilae (Halda) Halda Cactus disciformis Kuntze Echinocactus disciformis (DC.) K.Schum. Echinocactus turbiniformis Pfeiff. Mammillaria disciformis DC. Pediocactus jarmilae ? Strombocactus disciformis ssp. jarmilae (Halda) Halda Strombocactus jarmilae Halda

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.[2]

Taxonomy

The species has several forms and subspecies:

• Strombocactus disciformis f. cristata
• Strombocactus disciformis ssp. esperanzae

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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". The species is listed in Appendix 1 of the Convention on International Trade in Endangered Species meaning commercial international trade is prohibited and non-commercial international trade is regulated.[1]

References