中国单格孢属(丝孢纲)的种

Species of the genus Monodictys (Hyphomycetes) from China

报道单格孢属的两个新种,一个新组合,5个中国新记录种和两个未定名种,同时,对所有已知在中国发现的本属真菌的种进行了归纳总结并制作了检索表。新种小黑球单格孢Monodictys nigraglobulosa的典型特征是产生黑色近球形的分生孢子,具有黑而厚的隔膜;横向单格孢Monodictys transversa的分生孢子横向生长,即孢子的横向量度大于其高度。两个未定名种具有单格孢属的特征,但目前的材料所表现的分种特征还不够充分,暂称之为Monodictys sp.1和Monodictys sp.2,供进一步研究探讨。新组合为方单格孢Monodictys quadrata(Atk.)G.Z.Zhao&T.Y.Zhang。研究标本保存在山东农业大学植物病理学标本室(HSAUP)。

Two new species, one new combination, five new records to China and two indeterminate species in the genus Monodictys are reported. A key to 20 Chinese species of Monodictys is provided. The new species, Monodictys nigriglobulosa is characterized by having black and oblong conidia with broad septa, and Monodictys transversa is characterized by extending transversely conidia. The other two species having generic characters of Monodictys, but being lacking in sufficient comparable characters for identification in the present material are referred to Monodictys sp. 1 and Monodictys sp.2 temporarily. The new combination is Monodictys quadrata （Ark.） G. Z. Zhao ＆ T. Y. Zhang. All the specimens studied are deposited in the Herbarium of Shandong Agricultural University： Plant Pathology （HSAUP）.