Monographs Details: Pinus patula Schiede ex Schltdl. & Cham. var. patula
Authority: Farjon, Aljos K. & Styles, Brian T. 1997. Pinus (Pinaceae). Fl. Neotrop. Monogr. 75: 1-291. (Published by NYBG Press)
Family:Pinaceae
Synonyms:Pinus patula Schiede ex Schltdl. & Cham. var. patula
Description:Variety Description - Tree, as in the species. Seed cones (very) short pedunculate, seemingly sessile at maturity, in whorls of 2 to many, tenacious, persisting many years, serotinous, ovoid when closed, broadly ovoid and (5-)7-10(-12) X (3-)4-6.5 cm when open. Seed scales ca. 120-150, (thick) woody, rigid, many of the proximal scales remaining connate.

Discussion:

Distribution and Ecology: Mexico: In a few localities in Tamaulipas, in Queretaro, Hidalgo, México, Distrito Federal, Morelos, Tlaxcala, Puebla, Veracruz, Oaxaca, and Chiapas. Its main distribution is on the Sierra Madre Oriental and the high mountains of east-central Mexico. Its altitudinal range is (I400-) 1800-2800(-3300) m. Pinus patula var. patula is generally restricted to humid, subtropical to warm-temperate sites, with annual precipitation 1000-2200 mm. On the eastward slopes of the Sierra Madre Occidental these amounts are enhanced by frequent fog outside the rainy season. It occurs in a variety of mesic forest types, associated with other pines such as Pinus pseudostrobus, P. greggii, P. maximinoi, P. hartwegii, P. ayacahuite; on drier sites it is replaced by P. teocote, P. montezumae, and P. leiophylla. In some locations Abies religiosa occurs with it. Mixed pine-oak forests are most common in the interior, while on the Atlantic slope numerous angiosperms, especially Uquidambar, are (co-)dominant.

Phenology: Pollen dispersal is recorded in February and March (Critchfield, 1966b).
Distribution:Mexico North America| Distrito Federal Mexico North America| Hidalgo Mexico North America| México Mexico North America| Morelos Mexico North America| Oaxaca Mexico North America| Puebla Mexico North America| San Luis Potosí Mexico North America| Tamaulipas Mexico North America| Tlaxcala Mexico North America| Veracruz Mexico North America|