Editing Pinus cembroides (section)

==Taxonomy==
Mexican pinyon was the first [[pinyon pine]] described, named by [[Joseph Gerhard Zuccarini|Zuccarini]] in 1832. Many of the other pinyon pines have been treated as [[variety (biology)|varieties]] or [[subspecies]] of it at one time or another in the past, but research in the last 10–50 years has shown that most are distinct species. Some botanists still include [[Johann's pinyon]] and [[Orizaba pinyon]] in Mexican pinyon; the former accounts for records of "Mexican pinyon" in southern [[Arizona]] and [[New Mexico]].

Mexican pinyon is a relatively non-variable species, with constant morphology over the entire range except for the [[Disjunct distribution|disjunct]] population in the [[Sierra de la Laguna pine-oak forests]] of Baja California Sur; this is generally treated as a subspecies, ''Pinus cembroides'' subsp. ''lagunae'', although some botanists treat it as a separate species, ''P.&nbsp;lagunae.'' This subspecies differs from the type in having slightly longer leaves, between {{convert|4|cm|abbr=on|frac=4}} and {{convert|7|cm|abbr=on|frac=4}} and longer, narrower cones, up to {{convert|5.5|cm|abbr=on|frac=4}} long.{{Citation needed|date=November 2024}}