Onnia tomentosa

Onnia tomentosa (formerly Inonotus tomentosus)02221

Onnia tomentosa (Fr.) P. Karst 1889

(previously known as Inonotus tomentosus) “Wooly Velvet Polypore” Parasitic on conifers. This young wavy polypore can be mistaken for a toothed fungus when looking from above. Below the cap surface, however, there are pores and a dark brown short stipe. Onnia tomentosa causes a white root rot and is a formidable pathogen of cultivated white spruce plantations. It is in the Hymenochaetaceae family of the Hymenochaetales order.

Inonotus tomentosus5474

Inonotus tomentosus