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Pinus strobiformis, also known as Chihuahua white pine, is a medium-sized white pine tree endemic to western Mexico in the Sierra Madre Occidental mountain range. It is typically a high-elevation pine growing mixed with other conifers in montane forest .
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Pinus, the pines, is a genus of approximately 111 extant tree and shrub species. The genus is currently split into two subgenera: subgenus Pinus (hard pines), and subgenus Strobus (soft pines). Each of the subgenera have been further divided into sections based on chloroplast DNA sequencing [1] and whole plastid genomic analysis. [2]
Pinus arizonica: Arizona pine Pinaceae (pine family) Pinus armandii: Chinese white pine Pinaceae (pine family) Pinus attenuata: knobcone pine Pinaceae (pine family) Pinus ayacahuite: Mexican white pine Pinaceae (pine family) Pinus balfouriana: foxtail pine Pinaceae (pine family) Pinus banksiana: jack pine Pinaceae (pine family) Pinus bhutanica ...
Mature Pinus pinea (stone pine); note umbrella-shaped canopy: Pollen cones of Pinus pinea (stone pine): A red pine (Pinus resinosa) with exposed rootsYoung spring growth ("candles") on a loblolly pine
Members of the modern genera Pinus (pines), Picea (spruce) and Cedrus (cedar) first appear during the Early Cretaceous. [19] [20] [21] The extinct Cretaceous genera Pseudoaraucaria and Obirastrobus appear to be members of Abietoideae, while Pityostrobus appears to be non-monophyletic, containing many disparately related members of Pinaceae. [18]
Both naturally and artificially occurring pine species can hybridize, combining their genetic material and sometimes creating hybrids that can be more or less vigorous than their parent species.
Pinus stylesii is a species of pine in the family Pinaceae, native to the northern Sierra Madre Oriental mountains of northeastern Mexico. [1] A tree reaching 25 m (82 ft), it is a member of Pinus subsection Strobus. [2] It was split off from Pinus strobiformis, which is found in the Sierra Madre Occidental. [2]