The species P. muricata is quite variable in terms of morphological, genetic, geographical, physiological, ecological and chemical characteristics. The differences between the varieties are based on tree size, foliage, bark, and cones. Ross to Ft. The differences in the strains are related to stomatal anatomy, waxiness of needles, monoterpene composition, allozymes, and the flowering phenology. It is thought that the evolution of these different strains is due to population biogeographic movement and adaptation to unique soils.
Bishop pine seems to be a disturbance adapted tree.
It has been noted as an invading species following fires and invades coastal pastures where soil has been disturbed by cattle. References Lloyd, J.A. Fatty acids, resin acids and phenols in Pinus muricata . It was useful in terms of listing the characteristics used in differentiating between the two strains. Millar, Constance. 1983. A steep cline in Pinus muricata .