Trees and Timber 367 



The lower surface is pale and smooth, watery when 

 bruised. 



Following is a list of the principal genera of wood-rotting 

 fungi with the names of the trees on which they grow. Such 

 as bear page references are discussed on the pages indicated. 



Fungus Hosts 



Armillaria, p. 370. Oak, apple, and trees in general. 



Collybia. Horse-chestnut and deciduous trees gen- 



erally. 



Daedalea. Chestnut, maple, oak. 



Echinodontium. Fir, hemlock, p. 389, spruce. 



Favolus. Deciduous trees. 



Fistulina. Chestnut, oak. 



Fomes, pp. 359, Alder, apple, arbor-vita3, ash, p. 381, as- 

 364. pen, balsam, beech, birch, butternut, 



Cottonwood, currant, cypress, elm, fir, 

 goosel)erry, hemlock, hickory, juniper, 

 p. 383, larch, locust, p. 391, maple, oak, 

 olive, orange, peach, pine, plum, poplar, 

 rose, sassafras, p. 402, spruce, syca- 

 more, walnut, willow, and conifers and 

 deciduous trees generally. 



Hydnum, p. 361. Apple, beech, maple, oak, spruce, and 

 deciduous trees generally. 



Irpex. Trees generally. 



Lentinus. Aspen, Ijirch, i^ine, poplar. 



Lenzites. Beech, fir, pine, poplar, spruce, and coni- 



fers and deciduous trees generally. 



Pholiota. Apple, oak, poplar, and trees generally. 



Pleurotus. Elm, fir, maple, mulberry, pine, poplar, 



willow. 



Pluteus. Deciduous trees generally. 



Pol)T)orus, p. 361. Alder, apple, arbor- vitse, ash, balsam, 

 beech, birch, p. 382, butternut, catalpa, 

 p. 382, cedar, cherry, chestnut, elm, fir, 



