Photograph of Young Norway Pine Killed by Armillaria Mellea Root Rot
Original caption: Young Norway pine killed by Armillaria mellea root rot. Shows the encrustation of dirt and resin about the roots of the tree. Historic Photographs
Photograph of Armillaria Mellea Root Rot of White Pine
Original caption: Armillaria mellea root rot of white pine. A closeup of discased roots showing myelial wefts and resin encrustations on roots. Historic Photographs
Photograph of Armillaria Mellea Root Rot of Jack Pines
Original caption: Armillaria mellea root rot of jack pines. Shows symptoms of the disease infiltration of resin in the surface layers of wood. Historic Photographs
Photograph of Armillaria Mellea Root Rot of White Pine
Original caption: Armillaria mellea root rot of white pine. Shows sycelial wefts and encrusted soil around roots, as well as resin exudations. Historic Photographs
Photograph of Young Norway Pine Killed by Armillaria Mellea Root Rot
Original caption: Young Norway pine killed by Armillaria mellea root rot. Shows encrustation and infiltration or resin on surface of stump. Root collar waevil. Historic Photographs