, the Parry Pinyon
, is a pine
in the pinyon pine
group, native to southernmost California
in the United States
and northern Baja California
, from 33° 30' N south to 30° 30' N. It occurs at moderate altitudes from to , rarely as low as and as high as . It is scarce and often scattered in this region, forming open woodlands, usually mixed with junipers
is a small to medium size tree
, reaching to tall and with a trunk diameter of up to , rarely more. The bark is thick, rough and scaly. The leaves
('needles') are in fascicles of 4–5, moderately stout, - long; glossy dark green with no stomata
on the outer face, and a dense bright white band of stomata on the inner surfaces. The cones
are globose, - long and broad when closed, green at first, ripening yellow to orange-buff when 18–20 months old, with only a small number of thick scales, with typically 5–10 fertile scales.
open to to broad when mature, holding the seeds
on the scales after opening. The seeds are - long, with a thin shell, a white endosperm
, and a vestigial - wing; they are dispersed by the Pinyon Jay
, which plucks the seeds out of the open cones. The jay, which uses the seeds as a food resource, stores many of the seeds for later use, and some of these stored seeds are not used and are able to grow into new trees.