The difference between Pleurotus ostreatus and Pleurotus ostreatus: the color and efficacy are different. The color of the white arrow is white, while the color of the black arrow is black. White arrowhead refers to the traditional Chinese medicine arrowhead, which has the effects of clearing away heat and stopping bleeding, detoxifying, detumescence and diuresis, while black arrowhead has the effects of clearing away heat and stopping bleeding, detoxifying, detumescence and diuresis.