Baisuzhenia

Baisuzhenia is a mushroom genus in the Agaricales that produces white, fleshy, fan-shaped fruitbodies on long stipes, and smooth to only slightly wrinkled spore-bearing hymenium. Fruitbody initials begin as erect stipes that form a pileus off on one side, that fan out as it matures and may eventually expand upward and curl to become funnel-like but with a slit down one side where attached to the stipe. The tissues are unremarkable, and the spores are hyaline (colorless), white in spore deposits, thin-walled, smooth and not amyloid. Currently only a single species, Baisuzhenia humphreyi, is recognized primarily under the better-known name, Stereopsis humphreyi. It inhabits the coastal Sitka spruce fog zone in western North America (British Columbia, Canada and the Pacific Northwest, United States), and high altitude coniferous forests in Asia (China, Bhutan) It has been listed as a possibly threatened species in Canada..

The fungus appears to be saprophytic.

Baisuzhenia humphreyi is so unusual within the Agaricales that it is the only species in the family Baisuzheniaceae and suborder Baisuzheniineae.