Tuesday 21 May
Turbinicarpus (Turbinicarpus valdezianus)
What’s the World’s Favourite Species?Find out here.
Turbinicarpus fact file
- Find out more
- Print factsheet
Turbinicarpus valdezianus is a dwarf, globular cactus with a stem completely divided into angled tubercles and obscured by dense spines. This species has 30 or more distinctive ‘radial’ spines, which are white and feathery and measure up to 0.2 centimetres in length. The radial spines spread out horizontally, forming small ‘umbrellas’ on the tips of the tubercles. Unlike some other species, Turbinicarpus valdezianus lacks central spines (2).
This cactus may be confused with other small cacti with dense, feathery spines, such as Mammillaria lasiacantha, Mammillaria theresae and Mammillaria sanchez-mejoradae. However, the flowers of Turbinicarpus valdezianus are positioned at the top of the stem, rather than on the sides as in Mammillaria species (2).
- Diameter: up to 2.5 cm (2)
Measuring around two centimetres in diameter, the flowers of Turbinicarpus valdezianus grow at the top of the stem and are white to magenta in colour, with a darker stripe down the middle of the petaloids. This species flowers in winter (4). The fruits of Turbinicarpus valdezianus are brownish, and open along a longitudinal slit from which the small black seeds are released (4).Top
Turbinicarpus valdezianus has a wide distribution in northern Mexico, where it can be found in the states of Coahuila, Nuevo León, San Luis Potosí and Zacatecas (2).Top
Turbinicarpus valdezianus has a widespread distribution with many known populations, and is not under immediate threat of extinction. However, some populations may be more affected by human activities than others. The type locality of this species was destroyed by the construction of the airport of Saltillo, and other populations in this area are threatened by the expansion of chicken farms. Illegal collection also contributes to the decline of this cactus (1).Top
Turbinicarpus valdezianus is listed on Appendix I of the Convention on International Trade in Endangered Species (CITES), which includes species threatened with extinction, which are or may be affected by trade. Trade in this cactus should be subject to particularly strict regulation in order not to further endanger its survival, and must only be authorized in exceptional circumstances(3). Within Mexico, Turbinicarpus valdezianus is also subject to special protection (Pr) on the Norma Oficial Mexicana NOM-059 (6).Top
Find out more
To find out more about Turbinicarpus species see:
The Turbinicarpus Information Exchange:
Information supplied and authenticated (20/12/2010) by Alessandro Mosco, PhD, Department of Life Sciences, University of Trieste.
- A flower part which resembles a petal, but has a different origin.
- In cacti, a conical or angular swelling upon the stem.
- Type locality
- The location from which the first described specimen of a species or subspecies came.
IUCN Red List (December, 2010)
- Lüthy, J.M. (2001) The Cacti of CITES Appendix I.Bundesamt für Veterinärwesen, Bern.
CITES (December, 2010)
- Anderson, E.F., Arias Montes, S. and Taylor, N.P. (1994) Threatened Cacti of Mexico. Royal Botanic Gardens, Kew.
- Sotomayor, M. del C.J.M., Arredondo Gómez, A., Sánchez Barra, F.R. and Martínez Méndez, M. (2004) The Genus Turbinicarpus in San Luis Potosí. Cactus & Co., Tradate (VA), Italy.
Norma Oficial Mexicana NOM-059 (December, 2010)
MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite ARKive images and videos and share them with friends.
Terms and Conditions of Use of Materials
Copyright in this website and materials contained on this website (Material) belongs to Wildscreen or its licensors.
Visitors to this website (End Users) are entitled to:
- view the contents of, and Material on, the website;
- download and retain copies of the Material on their personal systems in digital form in low resolution for their own personal use;
- teachers, lecturers and students may incorporate the Material in their educational material (including, but not limited to, their lesson plans, presentations, worksheets and projects) in hard copy and digital format for use within a registered educational establishment, provided that the integrity of the Material is maintained and that copyright ownership and authorship is appropriately acknowledged by the End User.
End Users shall not copy or otherwise extract, alter or manipulate Material other than as permitted in these Terms and Conditions of Use of Materials.
Additional use of flagged material
Green flagged material
Certain Material on this website (Licence 4 Material) displays a green flag next to the Material and is available for not-for-profit conservation or educational use. This material may be used by End Users, who are individuals or organisations that are in our opinion not-for-profit, for their not-for-profit conservation or not-for-profit educational purposes. Low resolution, watermarked images may be copied from this website by such End Users for such purposes. If you require high resolution or non-watermarked versions of the Material, please contact Wildscreen with details of your proposed use.
Creative commons material
Certain Material on this website has been licensed to Wildscreen under a Creative Commons Licence. These images are clearly marked with the Creative Commons buttons and may be used by End Users only in the way allowed by the specific Creative Commons Licence under which they have been submitted. Please see http://creativecommons.org for details.
Any other use
Please contact the copyright owners directly (copyright and contact details are shown for each media item) to negotiate terms and conditions for any use of Material other than those expressly permitted above. Please note that many of the contributors to ARKive are commercial operators and may request a fee for such use.
Save as permitted above, no person or organisation is permitted to incorporate any copyright material from this website into any other work or publication in any format (this includes but is not limited to: websites, Apps, CDs, DVDs, intranets, extranets, signage, digital communications or on printed materials for external or other distribution). Use of the Material for promotional, administrative or for-profit purposes is not permitted.