| Mushrooms of armillaria may develop annually in the fall, during wet periods. |
| Oregon is home to what is considered the largest single organism in the world, an Armillaria solidipes fungus beneath the Malheur National Forest of eastern Oregon. |
| The fungi involved include those that form ectomycorrhizas with trees and other woody plants, parasites such as Armillaria, and saprotrophs. |
| To overcome this limitation, some fungi, such as Armillaria, form rhizomorphs, which resemble and perform functions similar to the roots of plants. |
| That depends on which species of Armillaria we find more commonly here. |
| In stands of all ages, armillaria root disease can kill individual trees or cause large centres of mortality. |
