The term “honey mushroom” applies to more than one member of this species. They live on trees or woody shrubs. They are parasitic—they attack living plants, as well as on deadwood. Sometimes, for reasons not yet understood, they “go crazy,” causing extensive root rot and destruction.
Identification: Typically the caps are yellow-brown in color. They may be sticky when wet. The caps are convex when the mushrooms are young, but may become concave later. Some are bioluminescent—they glow in the dark. The spores of this mushroom are white.
Armillaria mellea on Michael Kuo's MushroomExpert.com
Armillaria mellea on Mykoweb.com: the Fungi of California
Armillaria mellea on CalPhotos
Armillaria mellea on Wikipedia
Armillaria mellea by Gary Emberger at Messiah College
Armillaria mellea at the USDA Forest Service State and Private Forestry Northeastern Area
Armillaria mellea on Wild Mushroom Recipes (recipes)
2Mushrooms of North America lists honey mushrooms as choice edibles
Armillaria mellea description by Thomas H. Kent, last updated 16 Aug 2013.