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A few piñons ( [[underlined]] Pinus monophylla [[/underlined]]) occur with [[underlined]] Pinus [[/underlined]] [[strikethrough]] coulteri [[/strikethrough]] [[underlined]] sabiniana [[/underlined]] below the yellow pines.
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higher divides.  An old wagon-road extends to within about a half-mile of the summit, and beyond this point the ascent is altogether too steep for a road.
At the lower end of the canon the commoner trees are . [[underlined]] Quercus lobata, Q. wislizeni [[/underlined]] frutescens, some of them attaining a diameter of more than a foot, [[underlined]] Platanus racemosa, Populus [[/underlined]] monilifera, [[underlined]] P. trichocarpa [[/underlined]]. With these are found a few trees of cedar [[underlined]] Libocedrus decurrus [[/underlined]].
At 3000 ft (computed) [[underlined]] Pinus [[/underlined]] [[strikethrough]] coulteri [[/strikethrough]] [[underlined]] sabiniana [[/underlined]], called here Digger-pine or bull pine, ^[[insertion]] begins and soon becomes [[/insertion]] [[strikethrough]] is [[/strikethrough]] abundant.
At an altitude of about   ft [[underlined]] Artemisia tridentata [[/underlined]] begins and continues to be the most characteristic shrub up to [[strikethrough]] about [[/strikethrough]] the summit of the divide.
The next zone is that of [[underlined]] Pinus ponderosa [[/underlined]]. It contains also as a characteristic tree [[underlined]] Abies concolor [[/underlined]], and higher up [[underlined]] Pinus lambertiana [[/underlined]].
Two easily distinguishable forms of [[underlined]] Pinus ponderosa [[/underlined]] occur, one at a lower altitude, a tall large tree, lanceolate or triangular-lanceolate in outline, with an acute top, and small cones with thin narrow scales.  One of the larger trees