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on southwest slopes and above 9000 feet on N.E. slopes or in gulches (or lower, as we did not go below 9000 feet). The zone is marked by Picea pungens & englemani, Abies concolor & arizonica, Populus tremuloides, and in part by Pseudotsuga & Pinus strobiformis.  Also by Juniperus communis, Salix cordata (?), Ribes  big spring &     cereum (big), & numerous small plants.

[[underlined]] Transition zone [[/underlined]] runs up to 9500 feet on SW slopes but stops below 9000 on NE. slopes. it is mainly Pinus ponderosa & Quercus englemani with a mixture of Pseudotsuga & white pine at the upper part.