Erioscyphella sinensis (Z.H. Yu and W.Y. Zhuang) Sasagawa, Tochihara & Hosoya, comb. et stat. nov.

Lachnum mapirianum sinense ≡ Lachnum mapirianum var. sinense Z.H. Yu and W.Y. Zhuang, Nova Hedwigia 74(3-4): 422 (2002).

Diagnosis.

Occurring on fallen leaves of of Quercus spp. or Castanopsis spp. in early summer and having needle-like ascospores.

Japanese name.

Shii-Kashi-hina-no-chawantake-modoki.

Specimen examined.

Japan, Ibaraki, Tsukuba, Mt. Tsukuba, 36.228539, 140.103504, ca 870 m, 23 Jun. 2007, on fallen leaves of Castanopsis sieboldii, R.Sasagawa (TNS-F-16841). Japan, Ibaraki, Tsukuba, Amakubo, Tsukuba Botanical Garden, 36.101472, 140.110944, ca 20 m, 15 Jun. 2007, on fallen leaves of C. sieboldii, R.Sasagawa (TNS-F-16838). JAPAN, Tottori, Yonago, Yonago Castle, 35.42437, 133.325472, ca 50 m, 3 Jun. 2018, on fallen leaves of C. sieboldii, Y.Tochihara (TNS-F-81383).

Distribution.

China (Hainan, Yunnan; Yu and Zhuang 2003). Japan (warm-temperate zone).

Notes.

The present fungus was treated as Lachnum sp. 13 by Hosoya et al. (2010). This fungus occurs in the same habitats as E. hainanensis, but it is easily distinguished in having longer and needle-like ascospores. Erioscyphella sinensis resembles L. mapirianum in the shape of ascospores, but the two species are different in that L. mapirianum has long slender apothecial stipes, larger asci, longer ascospores, and wider paraphyses.

In the present study, we transferred this fungus to Erioscyphella and upgraded it from variety to species level, because this fungus is not phylogenetically related to ' L '. Erioscyphella mapirianum (Fig. 1). The presence of apical amorphous materials of hairs was confirmed in this study (Suppl. material 1: Fig. S2).