Species
Genetic differentiation in the pinyon pine has been observed associated to insect herbivory and environmental stress.
There are eight species of true pinyons (Pinus subsection Cembroides) :
- Pinus cembroides – Mexican Pinyon
- Pinus orizabensis – Orizaba Pinyon
- Pinus johannis – Johann's Pinyon or Border Pinyon (includes P. discolor)
- Pinus culminicola – Potosi Pinyon
- Pinus remota – Texas Pinyon or Papershell Pinyon
- Pinus edulis – Colorado Pinyon or Two-needle Pinyon
- Pinus monophylla – Single-leaf Pinyon
- Pinus quadrifolia – Parry Pinyon (includes P. juarezensis).
These additional Mexican species are also related and mostly called pinyons:
- Pinus rzedowskii – Rzedowski's Pine
- Pinus pinceana – Weeping Pinyon
- Pinus maximartinezii – Big-cone Pinyon
- Pinus nelsonii – Nelson's Pinyon
as are also the three bristlecone pines of the high mountains of the SW USA, and the Lacebark Pines of Asia.
Read more about this topic: Pinyon Pine
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