Diaporthe rostrata C. M. Tian, X. L. Fan & K. D. Hyde

Diaporthe rostrata C. M. Tian, X. L. Fan & K. D. Hyde, Mycol. Progr. 14: 82 (2015) Suppl. material 6 Material examined. China • Beijing City, Haidian District, from diseased branches of J. regia, M. Li, L. L. Zhao and L. Zhang, 19 October 2020 (JF-11, ex-type culture CGMCC 3.28283); Hebei Province, Chengde City, from diseased branches of J. regia, M. Li and L. L. Zhao, 13 February 2024 (CD-22, culture CGMCC 3.27755); Shanxi Province, Jiaokou City, from diseased branches of J. regia, Y. Ding, M. Li and L. L. Zhao, 28 February 2024 (JK-14-2, culture CGMCC 3.27757; JK-16-2, culture CGMCC 3.27760). Notes. Diaporthe rostrata was first described from Juglans mandshurica in Gansu Province, China (Fan et al. 2015). Dissanayake et al. (2024) compared morphological details and phylogenetic analysis, treating D. juglandicola as the synonym of D. rostrata. Phylogenetically, four isolates clustered together with D. rostrata with high support (100 % / 1 / 100 %) (Fig. 2); the base pair similarity shows 99.6 % (455 / 457) on cal, 98.2 % (439 / 447) on his, 100 % (550 / 550) on ITS, 99.2 % (357 / 360) on tef 1 - α, and 100 % (473 / 473) on tub 2 compared to the ex-type of D. rostrata. Morphologically, the culture characteristics and alpha conidia are consistent with the description of D. rostrata (Table 1) (Fan et al. 2015). In this study, D. rostrata was collected from the walnut plantations of Beijing, Gansu, Hebei, Shandong, Shanxi, and Yunnan provinces.