P. brownii

Usually growing in sparse chaparral, open places in chaparral or woods of Pinus, Picea or Populus, or on grassy slopes. The plants with which it is most frequently associated are Pinus ponderosa, Pseudotsuga menziesii, Calocedrus decurrens, Populus tremuloides, Larix sp., Castanopsis sp., Ceanotus sp. and Artemisia spp. The species mostly occurs in granite soils or on volcanic rocks at altitudes from 600 to 2,600 m. Confined to the USA and distributed in N California, Idaho, Nevada, Oregon, Utah, Washington and Wyoming.
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