A genus of fungi that form mushroom-shaped fruit bodies; the cap is white, smokey, or brownish, with broad, well-spaced gills, and a central, often long-rooting stipe. They are found on wood. O. mucida (porcelain fungus) is common on beech trunks and is white, semi-translucent, and slimy. O. radicata (rooting shank) has a yellow-brown to olive-brown cap with white gills, and a long-rooting stem. It is very common on roots or buried wood.
Subjects: Plant Sciences and Forestry.