Diaporthalean fungi associated with canker and dieback of trees from Mount Dongling in Beijing, China Author Zhu, Haiyan Author Pan, Meng Author Bonthond, Guido Author Tian, Chengming Author Fan, Xinlei text MycoKeys 2019 59 67 94 http://dx.doi.org/10.3897/mycokeys.59.38055 journal article http://dx.doi.org/10.3897/mycokeys.59.38055 1314-4049-59-67 D9DDDFA0B6CB514AA5B9413F358ABC54 Juglanconis oblonga (Berk.) Voglmayr & Jaklitsch Persoonia 38: 147 (2017) ≡ Melanconium oblongum Berk., Grevillea 2 (22): 153 (1874) ≡ Diaporthe juglandis Ellis & Everh., Proc. Acad. Nat. Sci. Philadelphia 45: 448 (1893) ≡ Melanconis juglandis (Ellis & Everh.) A.H. Graves, Phytopathology 13: 311 (1923) Description. See Fan et al. (2018b) . Material examined. CHINA, Beijing City, Mentougou District, Mount Dongling, Xiaolongmen Forestry Centre ( 39°57'54.68"N , 115°27'45.27"E ), from branches of Juglans mandshurica Maxim., 22 Aug. 2017, H.Y. Zhu & X.L. Fan, deposited by X.L. Fan, CF 2019906, living culture CFCC 53151; ibid. CF 2019909, living culture CFCC 53152. Notes. Juglanconis oblonga (previous Melanconium oblongum ) is associated with canker disease of Juglandaceae hosts in North America and Southeast Asia ( Graves 1923 , Voglmayr et al. 2017 , Fan et al. 2018b ). This species is similar to J. juglandina in disease symptoms but can be distinguished by its longer conidia (22 x 12.5 compared to 20 x 13 μm ) and DNA sequence data ( Fan et al. 2018b ). This species is a common pathogen causing walnut canker in China ( Fan et al. 2018b ).