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 on 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.
The sturdy storm-enduring red cedar (Juniperus occidentalis) delights to dwell on the tops of granite domes and ridges and glacier pavements of the upper pine belt, at an elevation of seven to ten thousand feet, where it can get plenty of sunshine and snow and elbow-room without encountering quick-growing overshadowing rivals. They never make anything like a forest, seldom come together even in groves, but stand out separate and independent in the wind, clinging by slight joints to the rock, living chiefly on snow and thin air, and maintaining tough health on this diet for two thousand years or more, every feature and gesture expressing steadfast dogged endurance. The largest are usually about six or eight feet in diameter, and fifteen or twenty in height. A very few are ten feet in diameter, and on isolated moraine heaps forty to sixty feet in height. Many are mere stumps, as broad as high, broken by avalanches and lightning, picturesquely tufted with dense gray scalelike foliage, and giving no hint of dying. The staminate flowers are like those of the libocedrus, but smaller; the pistillate are inconspicuous. The wood is red, fine-grained, and fragrant; the bark bright cinnamon and red, and in thrifty trees is strikingly braided and reticulated, flaking off in thin lustrous ribbons, which the Indians used to weave into matting and coarse cloth. These brown unshakable pillars, standing solitary on polished pavements with bossy masses of foliage in their arms, are exceedingly picturesque, and never fail to catch the eye of the artist. They seem sole survivors of some ancient race, wholly unacquainted with their neighbors.
I have spent a good deal of time, trying to determine their age, but on account of dry not which honeycombs most of the old ones, I never got a complete count of the largest. Some are undoubtedly more than two thousand years old; for though on good moraine soil they grow about as fast as oaks, on bare pavements and smoothly glaciated overswept granite ridges in the dome region they grow extremely slowly. One on the Starr King ridge, only two feet eleven inches in diameter, was eleven hundred and forty years old. Another on the same ridge, only one foot seven and a half inches in diameter, had reached the age of eight hundred and thirty-four years. The first fifteen inches from the bark of a medium-sized tree-six feet in diameter-on the north Tenaya pavement had eight hundred and fifty-nine layers of wood, or fifty-seven to the inch. Beyond this the count was stopped by dry rot and scars of old wounds. The largest I examined was thirty-three feet in girth, or nearly ten in diameter; and though I failed to get anything like a complete count, I learned enough from this and many other specimens to convince me that most of the trees eight to ten feet thick standing on pavements are more than twenty centuries of age rather than less. Barring accidents, for all I can see, they would live forever. When killed, they waste out of existence about as slowly as granite. Even when overthrown by avalanches, after standing so long, they refuse to lie at rest, leaning stubbornly on their big elbows as if anxious to rise, and while a single root holds to the rock putting forth fresh leaves with a grim never-say-die and never-lie-down expression.
As the juniper is the most stubborn and unshakable of trees, the mountain hemlock (Tsuga Mertensiana) is the most graceful and pliant and sensitive, responding to the slightest touches of the wind. Until it reaches a height of fifty or sixty feet it is sumptuously clothed down to the ground with drooping branches, which are divided into countless delicate waving sprays, grouped and arranged in most indescribably beautiful ways, and profusely sprinkled with handsome brown cones. The flowers also are peculiarly beautiful and effective; the pistillate very dark rich purple; the estimate blue of so fine and pure a tone that the best azure of the high sky seems to be condensed in them.
Though apparently the most delicate and feminine of all the mountain trees, it grows best where the snow lies deepest, at an elevation of from nine thousand to nine thousand five hundred feet, in hollows on the northern slopes of mountains and ridges. But under all circumstances and conditions of weather and soil, sheltered from the main currents of the winds or in blank exposure to them, well fed or starved, it is always singularly graceful in habit. Even at its highest limit in the park, ten thousand five hundred feet above the sea on exposed ridgetops, where it crouches and huddles close together in low thickets like those of the dwarf pine, it still contrives to put forth its sprays and branches in forms of irrepressible beauty, while on moist well-drained moraines it displays a perfectly tropical luxuriance of foliage, flower, and fruit.
In the first winter storms the snow is oftentimes soft, and lodges in the dense leafy branches, pressing them down against the trunk, and the slender drooping axis bends lower and lower as the load increases, until the top touches the ground and an ornamental arch is made. Then, as storm succeeds storm and snow is heaped on snow, the whole tree is at last buried, not again to see the light or move leaf or limb until set free by the spring thaws in June or July. Not the young saplings only are thus carefully covered and put to sleep in the whitest of white beds for five or six months of the year, but trees thirty and forty feet high. From April to May, then the snow is compacted, you may ride over the prostrate groves without seeing a single branch or leaf of them. In the autumn they are full of merry life, when Clark crows, squirrels, and chipmunks are gathering the abundant crop of seeds while the deer rest beneath the thick concealing branches. The finest grove in the park is near Mount Conness, and the trail from the Tuolumne soda springs to the mountain runs through it. Many of the trees in this grove are three to four or five feet in diameter and about a hundred feet high.
The mountain hemlock is widely distributed from near the south extremity of the high Sierra northward along the Cascade Mountains of Oregon and Washington and the coast ranges of British Columbia to Alaska, where it was first discovered in 1827. Its northmost limit, so far as I have observed, is in the icy fiords of Prince William's Sound in latitude 61, where it forms are forests at the level of the sea, growing tall and majestic on the banks of the great glaciers, waving in accord with the mountain winds and the thunder of the falling icebergs. Here as in the Sierra it is ineffably beautiful, the very loveliest evergreen in America.
Of the round-headed dicotyledonous trees in the park the most influential are the black and goldcup oaks. They occur in some parts of the main forest belt, scattered among the big pines like a heavier chaparral, but form extensive groves and reach perfect development only in the Yosemite valleys and flats of the main cañons. The California black oak (Quercus Californica) is one of the largest and most beautiful of the Western oaks, attaining under favorable conditions a height of sixty to a hundred feet, with a trunk three to seven feet in diameter, wide-spreading picturesque branches, and smooth lively green foliage handsomely scalloped, purple in the spring, yellow and red in autumn.
