Abstract: Thirteen species of the genus Lactarius sold on rural markets in Yunnan Province, China are re-ported. They are L. camphoratus (Bull.) Fr., L. deliciosus (Fr.) S. F. Groay, L. deterrimus Grg-er, L. ecfunatus Thiers, L. gerardU Peck, L. glyciosmus (Fr.) Fr., L. hatsudake Tanaka, L. hy-grophoroides Berk. et Curt. , L. ponunsis Holland, L. sp., L. subzonarius Hongo, L. vellereus (Fr.) Fr. and L. volemus Fr., which can be divided into six sections according to Singer's system (1962). Their microscopic descriptions and necessary discussion are provided. L. echinatus is new to China. In particu-lar, ten species of Sect. Dapetes recorded in China, namely, L. akahatsu Tanaka, L. deliciosus, L. deterrimus, L. hatsudake, L. indigo (Schw.) Fr., L. laeticolorus (Imai) Imaz., L. salmonicolor Heim et LeClair, L. sanguifluus Fr., L. semisanguifluus Heim et LeClair and L. thyinos Smith are carefully discussed and compared so as to find their major taxonomic characters and to clarify their taxonomic relations.

Key words: Lactarius

摘要： 报道了云南省农贸市场上乳菇属的13个贸易种，其中包 含1个存疑种和1个中国新记录种绒毛乳菇（新拟）L.echinatus Thiers；按照Singer 系统（1962）对这13个种进行了分组并进行了必要的描述和讨论；同时对国内文献记载的色 奶乳菇组（Sect. Dapetes）的10个种进行了详细的比较以澄清它们之间的分类学问题

关键词: 乳菇属, 贸易种, 色奶乳菇组, 云南