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Pleurotoid Mushrooms

by Michael Kuo

Mushrooms with a "pleurotoid" habit grow on wood, have gills, and typically form semicircular or kidney-shaped caps that are either directly attached to the wood or are attached by means of a rudimentary, lateral stem. They often grow in loose or dense clusters, forming shelf-like groups. However, many pleurotoid mushrooms can develop more or less central stems, especially when they grow on the upper surface of a log—when the stemless, sideways fruiting strategy would not allow the mushroom to hold its gills so that the spores will catch air currents and be distributed.

Pleurotoid mushrooms do not form a group of naturally related mushrooms; it is simply convenient, when identifying mushrooms, to narrow down the possibilities by lumping them together. Species of Crepidotus, for example, have brown spore prints and belong in the family Inocybaceae—while the "oyster mushroom," Pleurotus ostreatus has a lilac spore print and belongs in an entirely different family, the Pleurotaceae.

Clitopilus hobsonii
   Crepidotus applanatus
   Crepidotus calolepis
   Crepidotus cinnabarinus
   Crepidotus croceotinctus
   Crepidotus crocophyllus
   Crepidotus malachius
   Crepidotus mollis
   Crepidotus stipitatus
   Crepidotus vulgaris
   Hohenbuehelia angustata
   Hohenbuehelia atrocaerulea var. grisea
   Hohenbuehelia mastrucata
   Hohenbuehelia petaloides
   Lentinellus ursinus
Panellus serotinus
Panellus stipticus
Panus conchatus
Panus neostrigosus
Phyllotopsis nidulans
Pleurotus citrinopileatus
Pleurotus ostreatus
Pleurotus populinus
Pleurotus pulmonarius
Resupinatus alboniger
Schizophyllum commune


Pleurotus pulmonarius

Phyllotopsis nidulans

Hohenbuehelia mastrucata

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Kuo, M. (2005, February). Oysters: Pleurotoid mushrooms. Retrieved from the MushroomExpert.Com Web site: