Oak Bracket

Inonotus dryadeus

Appears in

By Roger Phillips

Published 2006

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Oak Bracket Inonotus dryadeus (Pers.) Murrill syn. Polyporus dryadeus (Pers.) Fr. (illustrated (e) 30% life size) Bracket 10–65cm×5–25cm across, 2–12cm thick, or sometimes forming large, irregular cushions, margin broadly rounded; white-grey, becoming brownish, finally very dark, margin paler; corky, upper surface uneven, margin exuding drops of yellowish liquid. Flesh rusty brown; fibrous. Tubes 5–20mm long; rusty brown. Pores 3–4 per mm, circular then angular; white-grey, becoming rusty. Spores 7–9×6.5–7.5¼, subglobose; white to yellowish. Hyphal structure monomitic, generative hyphae lacking clamp connections. Setae in the tubes with swollen base and hooked, pointed tips, dark brown. Habitat parasitic on various species of oak, found at the base of trunks; all year. Frequent. Not edible.