Volvariella volvacea (also known as straw mushroom or paddy straw mushroom; syn. Volvaria volvacea, Agaricus volvaceus, Amanita virgata, Vaginata virgata) is a species of edible mushroom cultivated throughout East and Southeast Asia and used extensively in Asian cuisines. In Chinese, they are called cǎogū (草菇, lit. "straw mushroom"), and in Vietnamese they are called nấm rơm.
They are often available fresh in Asia, but are more frequently found in canned or dried form outside their nations of cultivation.
They look dangerously similar to death caps, but can be distinguished by their pink spore print, which is white for death caps.