1981年12月,在我县政府机关院内的一株苹果树基部,长出一丛伞菌,当时寒风凛冽,气温在摄氏5度以下,而它却似花团锦蔟,茁壮成长。其子实体丛生,菌盖初期呈球形,后期平展,圆形,边沿黄褐色,中央淡黄白色,菌盖直径2～6厘米,湿时滑润,菌肉白色;菌柄中生,长5～12厘米,上部黄褐色,下部有浅黄褐色短绒毛,无菌环和菌托;孢子印白色,孢子无色、细小。经鉴定为金针菇即构菌(Collybia velutipes)。并于12月7日进行菌 In December 1981, at the base of an apple tree in our county government agency, a bunch of toadstools grew. At that time, it was cold and windy, its temperature was below 5 degrees Celsius, and it seemed like a blossoming brocade that thrived. Its fruiting body clusters, the initial cap was spherical, late flat, round, yellowish brown edge, the central yellowish white, cap diameter 2 ~ 6 cm, when wet slippery, bacteria white; 12 cm, the upper part of the tan, the lower part of the light brown hair short flu, sterile ring and bacteria support; spores printed white, spores colorless, small. Identified as Flammulina bacteria (Collybia velutipes). And on December 7 bacteria