真菌系统学大趋势：越来越多的分类单元

分子生物学技术与真菌系统学的有机融合,为真菌分类和系统发育研究带来了革命性的变化。最近20年来,真菌学家们建立了大量的新目、新科、新属和新种,掀开了真菌多样性及其起源进化研究的新纪元,但很多重要的系统发育问题仍没有解决,特别是大量目间、科间的亲缘关系并不清楚。细分是真菌系统学的主流趋势,野生食用菌和毒蘑菇的分类也是如此,近年涌现了越来越多的新分类单元,如在2010-2019年的10年间,中国发表大型真菌（含地衣）新种1 240余个。本专刊收载的15篇论文是对我国野生食用菌和毒蘑菇研究工作的部分总结,对真菌资源利用、毒蘑菇中毒预防与治疗具有较重要的科学意义和应用价值。

Trends in fungal systematics: more and more taxa

The incorporation of molecular biological techniques and fungal systematics has brought about revolutionary changes in fungal taxonomy and phylogenetic studies. In the last two decades, a large number of new orders, families, genera and new species have been established, which has opened a new era in the study of fungal diversity, its origin and evolution. However, many important phylogenetic issues have not been solved, especially the phylogenetic relationships among many orders and families are still unclear. Subdivision is the mainstream trend of fungal systematics, so is the classification of wild edible mushrooms and toadstools. In recent years, more and more new taxa have been discovered. For example, in the ten years from 2010 to 2019, more than 1 240 new species of large fungi (including lichens) have been published in China. The 15 papers included in this special issue are part of the summary of the research work on wild edible fungi and toadstools in China, and have important scientific significance and application value for the utilization of fungal resources, and the prevention and treatment of mushroom poisoning.