中国大陆新记录属——三臂孢属

Trinacrium Fr. : A New Recorded Genus from Mainland,China

三臂孢属（Trinacrium）以枯草三臂孢（T.subtile）为模式种,由Fries建立于1852年.目前,已有10个种正式报道.本研究首次记录了来自中国大陆的弯臂三臂孢（T.incurvum Mats.）,该种关键特征为产生两型分生孢子,典型的三臂孢具有一个3～4隔的主轴,两个1～3隔的臂;棒形孢子4～6隔.

The genus Trinacrium was erected by FRIES （1852） with T.subtile Fries as the type species.So far,ten species were reported.T.incurvum Mats.was firstly collected and identified from China's Mainland,its key character was present two types of conidia,the dominant triradiate conidia was consisted of one 3 ～ 4-septate axis,and two 1 ～ 3-septate arms,other clave conidia 4 ～ 6 septates.