Fomitopsis pinicola (Swartz ex Fr.) Karsten. Fichtenporling Unguline marginee. Fruit body perennial; no stem. Up to 38cm across, 20cm wide, 15cm thick, convex to hoof-shaped, with a thickened, rounded margin; upper surface with a sticky reddish-brown resinous crust, then grayish to brown or black; hard, woody, smooth or glossy-looking. Tubes up to 6mm deep per season; cream to buff. Pores 5-6 per mm, circular; surface cream-colored. Flesh up to 12cm thick, corky, hard, woody; cream to buff, sometimes zoned. Spores cylindrical ellipsoid, smooth, 6-9 x 3.5-4.5µ. Deposit whitish. Hyphal structure trimitic; clamps present. Habitat on dead conifer stumps and logs and occasionally on living trees. Found throughout Europe and most of North America except the South from Texas eastward. Season all year. Not edible. Comment The most commonly collected polypore in North America. The cap colors are rather variable.