. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. TIMBER STORAGE IN THE EASTERN AND SOUTHERN STATES. 37 laid on flat 2 by (j's resting on ashes was very quickly rotted out by this same fungus (PL IX, figs. 3 and -i), likewise offers circum- stantial evidence. The remaining fungus which needs consideration is Penlophora gigantea (Fr.) Mass. (PI. X, figs. 5 and 6). This is a white to pale creamy moldlike growth when immature. When mature it forms a wax}^ incrustation on the surface of the timber, closely ad- herent when fresh, but when dry tending to be
. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. TIMBER STORAGE IN THE EASTERN AND SOUTHERN STATES. 37 laid on flat 2 by (j's resting on ashes was very quickly rotted out by this same fungus (PL IX, figs. 3 and -i), likewise offers circum- stantial evidence. The remaining fungus which needs consideration is Penlophora gigantea (Fr.) Mass. (PI. X, figs. 5 and 6). This is a white to pale creamy moldlike growth when immature. When mature it forms a wax}^ incrustation on the surface of the timber, closely ad- herent when fresh, but when dry tending to become hard and horny and to curl up at the free edges. This organism is widely distrib- uted, mainly on pine timber, throughout the southern pine belt, and also occurs on conifers in the Rocky Mountain region. In the South it is frequently found in the woods, whence it readily passes to stored lumber. Many lumberyards have been abundantly infected with it ever since they started in business; so long, in fact, that to sever the attachment would be like losing an old acquaintance. From the southern yards it has been in- troduced northw^ard and is very conspicu- ous at certain points along the North At- lantic coast (PL III, fig. 7). The timber reaches these points mainly by boat. Close storage of the green or partially dried stock in the hold of a vessel during an ocean voy- age of perhaps several weeks usually permits a vigorous development of the fungus. As a result of this, infections are so abundant in some of the North Atlantic yards that one W'Ould have difficulty in finding any clean material whatever. It is fortunate that the organism does not approach in destructive- ness such forms as have been previously described, else numy lumber- yards would be doomed immediately. It is a wood-destroying fun- gus, however, which limits its action to the sapwood. Although the deterioration is comparatively slow, it does weaken the timl)er to a considerable extent and should be guarded
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