Volvariella volvacea

small tropical and subtropical edible mushroom having a white cap and long stem; an expensive delicacy in China and other Asian countries where it is grown commercially

白い傘と長い柄を持つ熱帯および亜熱帯の小型の食用キノコ；商業栽培されている中国などのアジア諸国では高価な珍味