Description
It is a small to medium-size tree, reaching 8–10 metres (26–33 ft) tall and with a trunk diameter of up to 50 cm. The bark is dark brown, thick and deeply fissured at the base of the trunk. The leaves ('needles') are in mixed fascicles of three and four, slender, 3-6 cm long, and deep green to blue-green, with stomata confined to a bright white band on the inner surfaces.
- Cones
The cones are globose to ovoid, 4-7 cm long and 3-5 cm broad when closed, green at first, ripening yellow-brown when 16–18 months old, with only a small number of thin scales, typically 6-18 fertile scales. The cones open to 5-7 cm broad when mature, holding the seeds on the scales after opening.
The seeds are 12-15 mm long, with a thick shell, a pink endosperm, and a vestigial 2 mm wing; they are dispersed by the Mexican Jay, which plucks the seeds out of the open cones. The jay, which uses the seeds as a major 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.
Read more about this topic: Orizaba Pinyon
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