我国垫盘菌属两新种

TWO NEW SPECIES OF PULVINULA FROM CHINA

本文报道我国贵州垫盘菌属Pulvinula的两个新种:微小垫盘菌P.minor M.H.Liu和贵州垫盘菌P.guizhouensis M.H.Liu。微小垫盘菌具有白色至乳白色的子囊盘、子囊216—286×15.6—23.4μm,子囊孢子13—15.6μm,易与近缘种区别,特别是它的极小的子囊盘(成熟时仅0.3-1.5 mm宽)在该属已知种中是少见的。贵州垫盘菌的子囊基部无产囊丝钩(croziers)结构,它与该属中缺乏产囊丝钩结构的另外3个承认种有明显的区别。模式标本存放于作者工作单位。

Two new species of Pulvinula, P. minor M. H. Liu and P. guizhouensis M. H. Liu, are described. The type specimens were collected by the author from Guizhou province, China. P. minor is similar to P. globifera (Berk, et Curt.) Le Gal, but clearly differs from the latter by its larger asci and ascospores, thicker paraphyses, and very small apothecia (0.3—1.5mm in diam.). P. guizhouensis is characterized by the absence of crozier at the ascus base. The distinction among the Pulvinula species lacking croziers at the ascus bases is tabled.Type specimens of the new species are deposited in the author's laboratory.