Melanconis itoana Tak. Kobay., Bull. Govt Forest Exp. Stn Meguro 226: 19 (1970)

Fan, Xinlei, Du, Zhuo, Bezerra, Jadson D. P. & Tian, Chengming, 2018, Taxonomic circumscription of melanconis-like fungi causing canker disease in China, MycoKeys 42, pp. 89-124 : 100

Melanconis itoana Tak. Kobay., Bull. Govt Forest Exp. Stn Meguro 226: 19 (1970)

Materials examined.

(all on twigs and branches of Betula albosinensis ). CHINA, Gansu Province, Gannan Tibetan Autonomous Prefecture, Zhouqu County, Qiban Forestry Centre, 33°56'34.49"N, 104°07'15.21"E, 20 August 2014, X.L. Fan (BJFC-S1322; living culture, CFCC 50474); Shaanxi Province, Ankang City, Ningshan County, Huoditang Forest Farm, 33°26'24.80"N, 108°26'45.10"E, 3 August 2015, Q. Yang (BJFC-S1349; living culture, CFCC 52877; ibid, CFCC 52878); Jilin Province, Jiaohe City, Haiqing Forest Farm, 43°79'88.71"N, 127°15'83.04"E, 26 June 2017, X.W. Wang (CF 20170668; living culture, CFCC 52876).

Notes.

Melanconis itoana was described from Betula ermanii in Japan ( Kobayashi 1970). Fan et al. (2016) isolated it from Betula albosinensis as a new record in China. Melanconis itoana is characterised by fusoid, green-brown alpha conidia with acute ends (13 × 4 μm) and hyaline, cylindrical or crescent beta conidia (9.5 × 1.5 μm).