. FiG. 25. — Clitocybe upon apple. After Wilcox. ing side of the tree. Several years may elapse between the ap- pearance of the first symptoms and final death. The roots, one or all, of trees well advanced in disease show decay, de- pendent in character upon the causal fungus. Several dif- ferent fungi cause root-rot (see p. 370). Among those most common on fruit trees are: Clitocyhe parasitica Wil. A

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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1920, bookyear1921