Abstract
Pinus georginae is described and illustrated as a new endemic species from the valleys in the southern basin of Río Ameca, Jalisco, western Mexico. It is closely related to Pinus praetermissa; however, after studying the cones and anatomy of the leaves in detail, characteristics were revealed that identify P. georginae as a distinct species.
Resumen
Se describe e ilustra Pinus georginae como una especie nueva, endémica de algunos valles intermontanos al sur del Río Ameca, Jalisco, en el Occidente de México. Los árboles se parecen a Pinus praetermissa; sin embargo, al estudiar con detalle los conos y la anatomía de las acículas lo ubican a Pinus georginae como una entidad biológica con categoría específica independiente.
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Literature Cited
Carvajal, S. & R. McVaugh. 1992. Pinus. In: R. McVaugh (ed). Flora Novogaliciana. Contributions from the University of Michigan Herbarium 17: 32–100.
Farjon, A. & B. T. Styles. 1997. Pinus (Pinaceae). Flora Neotropica Monograph 75:1–291. The New York Botanical Garden, New York.
García, E. 1988. Modificaciones al sistema de clasificación climática de Köppen para adaptarlo a las condiciones particulares de la República Mexicana, ed 4. Offset Larios, México, D. F.
Harlow, W. M. 1947. The identification of the pines of the United States, native and introduced, by needle structure. Syracuse University Technical Publication 32:1–19.
Kral, R. 1993. Pinus. In: Flora of North America Editorial Committee (ed.). Flora of North America, North of Mexico 2: 373–398. Oxford University Press, New York.
Little, E. L., Jr. & W. B. Critchfield. 1969. Subdivisions of the genus Pinus. U. S. Forest Service Miscellaneous Publications 1144. Washington, D. C.
Martínez, M. 1948. Los Pinos Mexicanos. Ed. 2 Botas, México, D. F. 361 pp.
Mirov, N. T. 1967. The genus Pinus. The Ronald Press Co. New York, 602 pp.
Pérez de la Rosa, J. A. 2001. Variación morfológica y taxonomía de Pinus grupo “Oocarpa” (Martínez, 1948), Pinaceae. Tesis de Doctorado, Facultad de Ciencias, Universidad Nacional Autónoma de México, México, D. F. 321 pp.
Rzedowski, J. & R. McVaugh. 1966. La Vegetación de Nueva Galicia. Contributions from the University of Michigan Herbarium 9(1): 1–123.
Stead, J. W. & B. T. Styles. 1984. Studies of Central American pines: a revision of the “pseudostrobus” group (Pinaceae). Journal of the Linnean Society, Botany 89: 249–275.
Styles, J. W. & R. McVaugh. 1990. Pinus praetermissa. Contributions from the University of Michigan Herbarium 17: 310, f. 1–2.
Acknowledgments
The University of Guadalajara, through the Instituto de Botánica, Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), supported this work. The author thanks Alfonso Delgado Salinas for his advice and observations on an earlier version of the manuscript, and Fernando Chiang Cabrera for providing the Latin description. I am grateful to Aljos Farjon and an anonymous reviewer for valuable critiques of the final manuscript. Thanks are also to Luz María González-Villarreal for her valuable assistance preparing this paper, Hilda Palacios Juárez for the anatomical leaf preparation. Plinio Guzmán González, Maria Elena Vargas Amado and Héctor Cantor González for the map, and María del Refugio Vázquez for the line drawing in the illustration.