. Bulletin. Natural history; Natural history -- Montana. 228 BULLETIN UNIVERSITY OF MONTANA tional cases two feet. By its thick bark (Fig. 7) the tree is well pro- tected from fires. It does not tolerate shade. In this respect it may be classed with the western larch and lodgepole pine. In the Flathead valley the tree is associated with the western larch in moister soils and with the bull pine in drier soils. It does not, however, reach the dimen- sions here that it does on the Pacific coast, where, with the western hem- lock and arbor-vitae, it forms luxuriant forests. The Douglas spruce is.


. Bulletin. Natural history; Natural history -- Montana. 228 BULLETIN UNIVERSITY OF MONTANA tional cases two feet. By its thick bark (Fig. 7) the tree is well pro- tected from fires. It does not tolerate shade. In this respect it may be classed with the western larch and lodgepole pine. In the Flathead valley the tree is associated with the western larch in moister soils and with the bull pine in drier soils. It does not, however, reach the dimen- sions here that it does on the Pacific coast, where, with the western hem- lock and arbor-vitae, it forms luxuriant forests. The Douglas spruce is. Fig. i6 The Yew, showing leaves and berries. Photo by E. distributed throughout the western part of the United States, but in dry climates it is small and stunted in growth. The lowland fir (Abies grandis Lind.): This tree is also known as the white fir and the balsam fir. The leaves have already been described. On the horizontal branches they are conspicuously two ranked. They persist from eight to ten years. The cones are erect on branches near the top of the tree, and vary in length from two to four inches. The scales of the cones, as in all firs, are deciduous, the cone axis being shed later. The fruit matures in one season. The bark is smooth at first, with the characteristic balsam blisters. Later the bark splits into low. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Montana (Missoula); University of Montana (Missoula). Biological series. Missoula : University of Montana


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