Osteina

The genus was circumscribed by mycologist Marinus Anton Donk in 1966, with Polyporus obductus as the type species.^[1]

Catalogue of Life lists 3 accepted species:^[2]

• Osteina obducta (Berk.) Donk
• Osteina rhodophila (Spirin & Zmitr.) Bernicchia & Gorjón
• Osteina undosa (Peck) Zmitr.

Osteina is characterized by fruit bodies that are sessile to stipitate, which are bone hard when dry. It has a monomitic hyphal system, containing only generative hyphae with clamps. The spores are hyaline and thin-walled, and are inamyloid and acyanophilic. Osteina causes a brown rot in gymnosperm wood.^[3]