科研之友
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摘要
As a result of a series of explorations in the municipality of San Jose Iturbide, Guanajuato, a population of Pinus strobiformis Engelmann was located which was identified through keys, description and checked against herbarium material. At present, the species is reported in the Mexican Official Standard NOM-059-SEMARNAT-2010 (Official Journal, 2010), within the Category of Risk Pr referring to species that could potentially be threatened by factors that adversely affect their viability. Thus, to incorporate P strobiformis into the repository of biodiversity of Guanajuato state identification and location is supported, which when updated evidence the southernmost distribution of the previously known records. The presence of the species in the state of Guanajuato is confirmed, in addition to the existing records in the states of Chihuahua, Coahuila, Durango, Jalisco, Nuevo Leon, San Luis Potosi, Sinaloa, Sonora and Zacatecas. Besides, the number of pine species recorded for the state of Guanajuato from 10 to 11 is amended. The origin of the species is related to the likely centers of diversity and evolution of pines recognized in the country and its analysis leads to believe that ancestors of the species are from the Rocky Mountains until their arrival at the center of diversity in Regions II and III and from there to the collecting site. The new locality is located at coordinates 20 degrees 56' N and 100 degrees 17' W.
- 出版日期2014-9
