• Biodiversity Oyster mushroom
  • The Oyster Mushroom

    Pleurotus ostreatus

    The Oyster mushroom, or Pleurotus ostreatus, is an extremely common edible mushroom and is often grown in growing kits by enthusiasts. It has been cultivated in Asia for centuries and is still used today.  Another common use of the oyster mushroom is for industrial mycoremediation.

    Identification of the Oyster Mushroom


    • Cap: 5-25 cm broad, fan or oyster-shaped; Natural specimens
      range from white to gray or tan to dark-brown; margin inrolled when
      young, smooth and often somewhat lobed or wavy. Flesh white, firm,
      varies in thickness due to stipe arrangement.
    • Gills: Gills are white to cream, descend stalk if present. If so, stipe off-center with lateral attachment to wood.
    • Spores: The spores form a white to lilac-gray print on dark media.
    • Stipe: Often absent. When present it is short and thick.
    • Taste: Mild
    • Odor: Often has a mild scent of anise.

    Toxic Look-alikes

    The only look-alike is Omphalotus nidiformis which grows in Australia and Japan.

    Links to More Oyster Mushroom Info

    Video Timelapses of Oyster Mushrooms

    Related Topics

    Written by Rob Nelson

    Rob is an ecologist from the University of Hawaii. He is also an award-winning filmmaker. As principle director of Untamed Science productions his goal is to create videos and content that are both entertaining and educational. When he's not making science content, he races slalom kayaks and skydives.

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