Colletotrichum gloeosporioides (Penz.) Penz. & Sacc., Atti Reale Ist. Veneto Sci. Lett. Arti., ser. 6, 2: 670. 1884 Materials examined. China. • Sichuan Province, Guangyuan City, Chaotian District, Walnut Cultural Square, 32 ° 40 ' 58 " N, 106 ° 02 ' 08 " E, from leaf of Juglans regia L., 10 Oct. 2023, Y. X. Li, L. Lin & X. L. Fan (BJFC - S 2239, living culture CFCC 59613; BJFC - S 2240, living culture CFCC 59621; BJFC - S 2242, living culture CFCC 59634); • Chaotian District, Mianguang Expressway, 32 ° 40 ' 50 " N, 105 ° 59 ' 19 " E, from leaf of Juglans regia L., 10 Oct. 2023, Y. X. Li, L. Lin & X. L. Fan (BJFC - S 2246, living culture CFCC 59611; BJFC - S 2247, living culture CFCC 59615; BJFC - S 2244, living culture CFCC 59632); • Chaotian District, Zhongzi Town, 32 ° 41 ' 34 " N, 106 ° 02 ' 23 " E, from leaf of Juglans regia L, 10 Oct. 2023, Y. X. Li, L. Lin & X. L. Fan (BJFC - S 2230, living culture CFCC 59633; BJFC - S 2228, living culture CFCC 59907; BJFC - S 2252, living culture CFCC 59913; BJFC - S 2254, living culture CFCC 59933). China. • Shaanxi Province, Shangluo City, Danfeng County, Dihua Ancient Town, 33 ° 44 ' 23 " N, 110 ° 12 ' 07 " E, from leaf of Juglans regia L., 13 Oct. 2023, Y. X. Li, L. Lin & X. L. Fan (BJFC - S 2257, living culture CFCC 59938; BJFC - S 2258, living culture 59939); • Danfeng County, Walnut Theme Park, 33 ° 44 ' 33 " N, 110 ° 11 ' 55 " E, from leaf of Juglans regia L., 13 Oct. 2023, Y. X. Li, L. Lin & X. L. Fan (BJFC - S 2263, living culture CFCC 59925; BJFC - S 2264, living culture CFCC 70189; BJFC - S 2259, living culture CFCC 59940; BJFC - S 2267, living culture CFCC 59949; BJFC - S 2261, living culture CFCC 70190). Notes. Colletotrichum gloeosporioides was originally described as Vermicularia gloeosporioides and collected from Citrus sp. in Italy. The current name Colletotrichum gloeosporioides was proposed by Penzig (1882). Colletotrichum gloeosporioides is a worldwide fungus that inhabits a wide range of host plants. In our study, 17 strains and three species (i. e., C. citrulli, C. juglandicola and C. peakense) were robustly grouped with C. gloeosporioides, supported by high Maximum Likelihood (ML) and Bayesian Inference (BI) confidence values (ML / BI = 88 / 0.90). Zhang et al. (2023 b) reduced C. dimorphum and C. nanhuaense as synonyms of C. gloeosporioides. Further research is needed to confirm the taxonomic status of C. citrulli, C. juglandicola and C. peakense. The morphology of the strains in our study closely resembles the type specimen of C. gloeosporioides, as described by Cannon et al. (2008). Thus, we propose the identification of our strains as C. gloeosporioides, based on both morphological characteristics and phylogenetic analyses. The result proves that walnut anthracnose has been attributed to C. gloeosporioides (Wang et al. 2020 a; Mu et al. 2021; Yang et al. 2021; Li et al. 2023).

Published as part of Li, Yixuan, Lin, Lu, Cao, Jing, Gan, Mingxu & Fan, Xinlei, 2024, Three new species of Colletotrichum (Glomerellales, Glomerellaceae) associated with walnut (Juglans regia) anthracnose from China, pp. 147-167 in MycoKeys 108 on pages 147-167, DOI: 10.3897/mycokeys.108.125382