蜜环菌是英国和世界其他地区侵染树木最具毁灭性的病原真菌之一。生长在市区的树木对此菌的感病率并不弱于生长在森林和乡村的树木。由于蜜环菌侵染行道树或绿化树,对附近的公路及邻近房屋造成严重危害,故需要了解这类病菌的致病过程。以前,所有侵染树木的 Armillaria 菌都被认为是 Armillaria mellea(vahtex Fr)K-umme。蜜环菌的种类可能比人们通常所知的要多,Romagnesi(1970,1973)描述的蜜环菌的其他三个种是最初的证据之一。在英国,根据子实体提出了最初鉴定蜜环菌种的鉴定大钢(Watling,1976)。而后, Armillalla is one of the most devastating pathogenic fungi that infests trees in the UK and other parts of the world. Trees in urban areas are not as susceptible to this disease as trees growing in forests and villages. As honey ring fungi invade the road trees or green trees, causing serious damage to the nearby roads and neighboring houses, it is necessary to understand the pathogenesis of such pathogens. In the past, all Armillaria that invaded the trees were considered Armillaria mellea (vahtex Fr) K-umme. The species of Armillaria may be more than commonly known, and the other three species of Armillalla described by Romagnesi (1970, 1973) are one of the first evidences. In the United Kingdom, the identification of the first large ring of Armillaria species was proposed based on sub-entities (Watling, 1976). then,