Pseudotsuga menziesii var. lindleyana explained

Pseudotsuga menziesii var. lindleyana, commonly known as the Mexican Douglas-fir, is a conifer in the genus Pseudotsuga that is endemic to Mexico.^[1] DNA sequence^[2] and morphological^[3] evidence suggests it is most closely related to Rocky Mountain Douglas-fir (P. menziesii var. glauca) and might best be treated as an additional variety within P. menziesii.^[1]

Distribution

Pseudotsuga menziesii var. lindleyana is native to the Sierra Madre Occidental, Sierra Madre Oriental, and scattered mountains as far south as Oaxaca.The Mexican Government lists Mexican Douglas-fir as "subject to special protection"^[4] because its populations are small, isolated and show signs of low fertility and recruitment due to inbreeding depression.^{[5] [6]}

External links

• The Gymnosperm Database: Pseudotsuga lindleyana - Old Classification
• The Gymnosperm Database: Pseudotsuga lindleyana in Pseudotsuga menziesii var. glauca - New Classification

Notes and References

1. Web site: Earle. C.J.. The Gymnosperm Database: Pseudotsuga lindleyana. 9 January 2018.
2. Gugger. Paul F.. González-Rodríguez, Antonio. Rodríguez-Correa, Hernando. Sugita, Shinya. Cavender-Bares, Jeannine. Jeannine Cavender-Bares. Southward Pleistocene migration of Douglas-fir into Mexico: phylogeography, ecological niche modeling, and conservation of 'rear edge' populations. New Phytologist. 2011. 189. 4. 1185–1199. 10.1111/j.1469-8137.2010.03559.x. 21118265. dead. https://web.archive.org/web/20150220235410/http://www.tc.umn.edu/~gugg0030/Gugger_etal2011%20NewPhyt.pdf. 2015-02-20. free.
3. Reyes-Hernández. VJ. Vargas-Hernández JJ . López-Upton J . Vaquera-Huerta H . Phenotypic similarity among Mexican populations of Pseudotsuga Carr. Agrociencia. 2006. 40. 4. 545–556.
4. Book: Norma Oficial Mexicana NOM-059-SEMARNAT-2010, Protección ambiental-Especies nativas de México de flora y fauna silvestres-Categorías de riesgo y especificaciones para su inclusión, exclusión o cambio-Lista de especies en riesgo.. 2010. Secretaría de Medio Ambiente y Recursos Naturales. Mexico City.
5. Mápula-Larreta. M.. López-Upton, J. . Vargas-Hernández, J. J. . Hernández-Livera, A. . Reproductive indicators in natural populations of Douglas-fir in Mexico. Biodiversity and Conservation. 2007. 16. 3. 727–742. 10.1007/s10531-005-5821-y. 23230135.
6. Velasco-García MV, López-Upton J, Angeles-Pérez G, Vargas-Hernández JJ, Guerra-de la Cruz V . Pseudotsuga menziesii seed dispersion in populations of central Mexico.. Agrociencia. 2007. 41. 1. 121–131.