Pleurotus dryinus does not look like other oyster mushrooms. Called the ‘Veiled Oystyer’, it has a partial veil which appears as velar remnants on the cap margin and a faint ring at the apex of its more or less central stem. The cap is cottony, and whitish with cream to yellow tints that become more obvious with age or handling. The whitish gills are somewhat decurrent. The spore print is white. Pleurotus dryinus, while edible, is more dense and tougher than other oyster mushrooms. It is a pathogen of broad-leaved trees and is especially common on dead oaks.
It is in the Pleurotaceae family of the Agaricales order.