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