The longleaf pine in virgin forest ; a silvical study . t in the crowns, though the trees were still alive andutilizable in the lower half of the stem for timber. Bulletin13 of the U. S. Forest Service gives, on page 63, the follow-ing explanation:— Frequently full-grown trees are found to show signsof rapid decay. These are recognized by the gradual dyingof the smaller limbs and their falling off, in consequenceof the rotting of the wood surrounding their base; and afterhaving been cast off a hole or diseased spot remains in thetrunk, which is infested by a large fungus of the genusPoly poms
The longleaf pine in virgin forest ; a silvical study . t in the crowns, though the trees were still alive andutilizable in the lower half of the stem for timber. Bulletin13 of the U. S. Forest Service gives, on page 63, the follow-ing explanation:— Frequently full-grown trees are found to show signsof rapid decay. These are recognized by the gradual dyingof the smaller limbs and their falling off, in consequenceof the rotting of the wood surrounding their base; and afterhaving been cast off a hole or diseased spot remains in thetrunk, which is infested by a large fungus of the genusPoly poms (punk holes, piink stools). The hcartwood ofsuch trees is of a reddish color, soft, sappy, and full ofsmall channels, caused by the breaking down of the wallsof the wood-cells filled with the mycelium, the so-calledspawn of the fungus, the thi-cads of which also penetratethe medullary rays. Such punky or red-heart timber isfound mostly on the ridges in the poorest soil. Apparentlysuperannuated trees are niost frequently found afflictedwith this Fig. 5.—A Longleaf Pine Sapling growing within a GroupOF Black Jack and Turkey Oaks. The logs in the background are from a very recent cut. D. H. HILL LIBRARYNorth Carolina ^tat** Coll Evolution in the Forest 27 The smaller openings are very noticeable in theforest and are the occasion of dense groves of youngtrees, locally known as sapling thickets. Butthese openings are not, as a rule, immediately occu-pied by young growth. It will be remembered thatthe seed years occur only at intervals, while repro-duction is still further hampered by the constantbattle that the young trees have to wage with it may happen that some of the speciesof oaks, originating from seeds of trees growing inthe neighborhood, first avail themselves of theadvantage of a free open spot, and, by shading outthe place, increase the difficulty that young pineshave in establishing themselves. In such cases itis only here and there that the pi
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