A new Tuber species, T. sinoaestivum, is described from southwestern China based on morphological and molecular analyses. The new species, which was found fruiting in association with Pinus armandii, has been previously misidentified as T. aestivum (=T. uncinatum). Although morphologically quite similar, T. sinoaestivum differs from the European species by more globose ascospores ornamented with a shallower reticulum. ITS sequence analyses show only 92% similarity between the two species, further supporting the taxonomic separation of T. sinoaestivum from T. aestivum.
1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Yunnan, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Med Sci, Inst Med Plant Dev, Beijing 100194, Peoples R China 4.Peking Union Med Coll, Beijing 100194, Peoples R China