Post 24649
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Above the great fir belt, and below the ragged beds and fringes of the dwarf pine, stretch the broad dark forests of Pinus contorta, var. Murrayana, usually called tamarack pine. On broad fields of moraine material it forms nearly pure forests at an elevation of about eight or nine thousand feet above the sea, where it is a small, well proportioned tree, fifty or sixty feet high and one or two in diameter, with thin gray bark, crooked much-divided straggling branches, short needles in clusters of two, bright yellow and crimson flowers, and small prickly cones. The very largest I ever measured was ninety feet in height, and a little over six feet in diameter four feet above the ground. On moist well-drained soil in sheltered hollows along streamsides it grows tall and slender with ascending branches, making graceful arrowy spires fifty to seventy-five feet high, with stems only five or six inches thick.
The most extensive forest of this pine in the park lies to the north of the Big Tuolumne Meadows,—a famous deer pasture and hunting ground of the Mono Indians. For miles over wide moraine beds there is an even, nearly pure growth, broken only by glacier meadows, around which the trees stand in trim array, their sharp spires showing to fine advantage both in green flowery summer and white winter. On account of the closeness of its growth in many places, and the thinness and gumminess of its bark, it is easily killed by running fires, which work wide-spread destruction in its ranks; but a new generation rises quickly from the ashes, for all or a part of its seeds are held in reserve for a year or two or many years, and when the tree is killed the cones open and the seeds are scattered over the burned ground like those of the attenuata.
Next to the mountain hemlock and the dwarf pine this species best endures burial in heavy snow, while in braving hunger and cold on rocky ridgetops it is not surpassed by any. It is distributed from Alaska to Southern California, and inland across the Rocky Mountains, taking many forms in accordance with demands of climate, soil, rivals, and enemies; growing patiently in bogs and on sand dunes beside the sea where it is pelted with salt scud, on high snowy mountains and down in the throats of extinct volcanoes; springing up with invincible vigor after every devastating fire and extending its conquests farther.