榆耳又名榆蘑,是我国著名的食药用兼备的真菌,主要分布于我国东北东部山地,自然发生在9—11月份,生长于榆树腐木小叶榆中枯死的树干或枯死和正在枯死的结合部位上。为典型的木腐菌,其子实体食之,质如海参,蹄筋,具有很浓的真菌(多孔菌)味,榆耳可用来治疗痢疾和肠胃系统其它疾病,疗效显著,由于野生资源匾乏,该菌价格昂贵,每公斤干品在150元以上,是我国传统出口商品,国际市场供不应求,主要外销日本、新加坡、马来西亚等国家。一、分类地位、形态及生态环境 Elm, also known as elm mushroom, is a famous edible and medicinal fungus in our country, mainly distributed in the eastern mountains of northeast China, naturally occurs in September-November, growing in Elm rotten leaves of the elm tree dead or dead and withering On the binding site. As a typical wood rot fungus, its fruiting bodies of food, quality, such as sea cucumber, tendons, has a very strong fungal (fungi) taste, elm ears can be used to treat diarrhea and other diseases of the gastrointestinal system, significant effect, due to lack of wild resources The bacteria is expensive, more than 150 yuan per kilogram of dry goods, is China’s traditional exports, the international market in short supply, the main export Japan, Singapore, Malaysia and other countries. First, the classification status, shape and ecological environment