Rediscovery of Carduncellus matritensis, an endemic and extinct species from the Iberian Peninsula
Carduncellus matritensis is a species known from a single locality, Cerro Negro, in the Community of Madrid. It is one of the 6 extinct endemic species of the Spanish flora. During the year 2021-2022, 3 populations have been rediscovered about 50 km south of the type locality, in the La Sagra region of Toledo province. These three populations are found in the expansive magnesium-rich clays that are very localized in the basin of the Tajo River. It coexists with other typical species of the area such as Cynara tournefortii and Klasea flavescens. The populations are formed by about 150 individuals and present a very fragmented distribution in a degraded habitat. Their conservation status has been categorized as Critically Endangered according to the IUCN Red List criteria.
In these two papers, the anthropogenic causes of its extinction in Madrid, the reasons for its possible taxonomic problems, its conservation status and possible measures to preserve it are discussed.
Luengo, E., Martinez-Labarga, J.M., de Pablo, R., Susanna, A., Vilatersana, R. (2022). The people you kill are doing quite well: The rediscovery of an “extinct” species described from the outskirts of Madrid (Spain), Carduncellus matritensis Pau (Cardueae). Capitulum 2: 50-56. doi.org/10.53875/capitulum.02.1.04
Luengo, E., Martinez-Labarga, J.M., de Pablo, R., Susanna A., Vilatersana, R. (2023). Rediscovering Carduncellus matritensis: assessing the conservation status of an Iberian endemic. Oryx, First View, 1-4. doi.org/10.1017/S0030605322001296