CHINA. Hainan Island: forest soil, H. Ho, culture FFM 10-5C = ATCC MYA-3422 = ICMP 19635 = WPC P10661. TAIWAN. from soil, F. Panabieres culture F441= ICMP 16915 = SCRP 388; Nan Ton County: Lenhuachih (Lianhuachi), natural forest soil, 13 May 1988, H.S. Chang, Herb. IMI 325914, culture L-2A = ATCC 36818 = ICMP 19450 = CBS 587.85 = IMI 325914 = WPC P15598; Nan Ton County: soil under Castanopsis fargesii, 13 Nov 2010, S.E. Bellgard, culture REB326-308 = ICMP 18737. JAPAN. Ibaraki: from Castanea crenata trunk rot, 1971, K. Uchida, culture P1 = NBRC 30433 = ICMP 19435; Ibaraki: from C. crenata trunk rot, 1971, K. Uchida, culture P3 = NBRC 30434 = ICMP 19436; Ibaraki: from C. crenata shoot, 1971, K. Uchida, culture P12 = NBRC 30435 = ICMP 19437;

Description:—Katsura (1976) provided an initial description of this species and Ko & Chang (1979) described Taiwanese specimens. The more recent description of Erwin & Ribeiro (1996) is still useful, although the circumscription encompasses isolates we consider P. cocois. The primary morphological characters of isolates considered as P. castaneae examined in this work are presented in Table 3.

Known on trunk rot of Castanea crenata from Japan and Korea, on Castanopsis fargesii Franch. from Taiwan, and soil from China.

JAPAN. Ibaraki: from Castanea crenata Siebold & Zucc. trunk rot, 1971, K. Uchida, holotype specimen Herb. 1971-031 (Plant Pathology Herbarium, Kyoto Prefectural University, Japan); ex-holotype culture P8 = NBRC 9753 = ICMP 19434 = WPC P10187. Ko & Chang (1979) correctly cited the holotype of the species to be the Japanese specimen “No. 1971-031, Plant Pathology Herbarium, Kyoto Prefectural University, Japan”, but then described the morphology of an isolate from Taiwan (ATCC 36818); this isolate has subsequently been used as a reference strain for P. castaneae (ref Q-Bank). However, a culture of 1971-031 isolated by K. Uchida (P8) was deposited in the IFO (now NBRC) culture collection of Japan as NBRC 9753, and is thus an authentic ex-holotype culture.