The ponderosa is one of the most widely distributed American species of this conifer
[DOC] [TLE] 1 - US Forest Service - US Department of Agriculture [PAR] May 16, 2013 ... Natural Range of Variation (NRV) for yellow pine and mixed conifer ..... 
Ponderosa pine, the most widely distributed pine species in North... [DOC] [TLE] Pinus ponderosa | USA National Phenology Network [PAR] This species is the most widely distributed and common pine in North America.