Allegany County . Oak forms only fromfive to ten per cent. It is a tree singularly well adapted to a varietyof soils, often producing well-formed trunks even in the deep crevicesof almost bare rock. The largest trees occur in rich coves and sinkswhere the underlying rock is broken. The White Pine occurs almost entirely on northern and easternslopes, ascending to the summits of the highest mountains (, Warrior Ridge and Dans ^[ountain). It is especially con- 272 TItE FORESTS OF ALLEGAXY COUNTY spicuous along the rocky north slopes of streams, often formingdense, narrow belts of pure gr
Allegany County . Oak forms only fromfive to ten per cent. It is a tree singularly well adapted to a varietyof soils, often producing well-formed trunks even in the deep crevicesof almost bare rock. The largest trees occur in rich coves and sinkswhere the underlying rock is broken. The White Pine occurs almost entirely on northern and easternslopes, ascending to the summits of the highest mountains (, Warrior Ridge and Dans ^[ountain). It is especially con- 272 TItE FORESTS OF ALLEGAXY COUNTY spicuous along the rocky north slopes of streams, often formingdense, narrow belts of pure growth down to the waters edge(Fig. 14). Higher up on the slopes it is usually mingled with hard-woods. The White Pine forest shown in Fig. 14 is composedchiefly of young timber (25 to 75 years old), ranging from 6 to occa-sionally 15 inches in diameter, and under GO feet in height. Amuch older, scattered growth of this pine is found among tlicse conditions the trunks are 18 to 30 inche- in diameter. Fig. 14.—Pure ar ? t white Ill and SO to 100 feet high. The White Pine of this county grows bestin moist, well drained, clayey loam soil;, such as produce the finestWhite Oak. DISTKIBUTIOX OF SDBOKDINATE TIMBER TREES. The next most conspicuous timber trees are, among conifeis, thePitch Pine, Shortleaf Pine, Table-mountain Pine and Scrub hardwoods, the principal remaining species are Sugar Maple, Red^Ia]ilc, Shagbark Hickory, Tulip-tree, White Ash, White Basswood,Locust, Black (tuiu and American Elm. The pines commonly pass MARYLAXD GEOLOGICAL SURVEY 273 for one species. Together, they constitute an important elementin the forest cover of very exposed, bare, rocky, southern slopes. The Scrub Pine forms a dense cover in the poorest shaly soils onthe lower southern slopes of the high ridges, or more frequently onthe south side of low hills throughout the middle and southern sec-tions of the county (Plate XXVII, Fig. 2). It is peculiarly adaptedto exposed, steri
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