Tomentosus root rot
Onnia tomentosa

• Heartwood of infected roots and trunks is initially reddish brown
• As infection continues white pocket rot develops; decayed wood has elongated pockets or pits, and may appear honeycomb-like in cross section
• Infected trees have reduced growth and thin canopies, produce large amounts of cones and eventually die
• Infected trees frequently break or lodge during storms
• Mushrooms that are velvety brown above and porous and buff colored below appear around the base of the tree in late summer
• More information on Tomentosus root rot