New species and records of Diaporthe from Jiangxi Province, China Author Yang, Qin The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, China & Forestry Biotechnology Hunan Key Laboratories, Central South University of Forestry and Technology, Changsha 410004, China & The Key Laboratory for Non-Wood Forest Cultivation and Conservation of the Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China Author Jiang, Ning https://orcid.org/0000-0002-9656-8500 The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, China Author Tian, Cheng-Ming https://orcid.org/0000-0002-3352-7664 The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, China chengmt@bjfu.edu.cn text MycoKeys 2021 2021-01-14 77 41 64 http://dx.doi.org/10.3897/mycokeys.77.59999 journal article http://dx.doi.org/10.3897/mycokeys.77.59999 1314-4049-77-41 FAE5387DCE535A42BEF6F4E81E9297AA Diaporthe ganzhouensis C.M. Tian & Q. Yang sp. nov. Figure 5 Diagnosis. Distinguished from the phylogenetically closely-related species D. vawdreyi in having longer conidiophores and wider alpha conidia. Etymology. Named after Ganzhou City where the species was first collected. Description. On PDA: Conidiomata pycnidial, subglobose, solitary, deeply embedded in the medium, erumpent, dark brown to black. Pale yellow conidial drops exuding from ostioles. Conidiophores (12-)15.5-21 x 1.5-2 μm , cylindrical, hyaline, phiailidic, branched, straight or slightly curved. Alpha conidia 6.5-8.5(-9) x 2-2.5(-3) μm , aseptate, hyaline, ellipsoidal to fusiform, rounded at one end, slightly apex at the other end, biguttulate. Beta conidia hyaline, aseptate, filiform, sinuous at one end, eguttulate, (21.5-)25.5-31(-33) x 1 µm . Figure 5. Diaporthe ganzhouensis on unknown host (BJFC-S1678) a the colony on PDA and conidiomata b alpha and beta conidia c conidiogenous cells and alpha conidia. Scale bars: 10 μm ( b, c ). Culture characters. Colony at first white, becoming yellowish with age. Aerial mycelium white, dense, fluffy, with visible solitary conidiomata at maturity. Specimens examined. China. Jiangxi Province: Ganzhou City, unknown dead wood, 25°45'17"N , 115°00'41"E , 23 Jul 2018, Q. Yang , Y. Liu , Y.M. Liang & C.M. Tian (holotype BJFC-C004; ex-type culture: CFCC 53087; living culture: CFCC 53088). Notes. Diaporthe ganzhouensis comprises the isolates CFCC 53087 and CFCC 53088, revealed to be closely related to D. vawdreyi in the combined phylogenetic tree (Fig. 1 ). Diaporthe ganzhouensis can be distinguished, based on ITS, tef1-α and tub2 loci from D. vawdreyi (6/456 in ITS, 63/357 in tef1-α and 40/469 in tub2 ). Diaporthe ganzhouensis differs morphologically from D. vawdreyi in having longer conidiopores (15.5-21 vs. 6-15 μm ) and wider alpha conidia (2-2.5 vs. 1.5-2 μm ) ( Crous et al. 2015 ).