Retrostium amphiroae Nakagiri & Tad. Ito
Index Fungorum number: IF437273
Retrostium amphiroae (Material examined – JAPAN, Honshu: Shizuoka Pref., Shimoda, on living thalli of Amphiroa zonata, 30 June 1992, A. Nakagiri, IFO H-12210, holotype) a Herbarium material. b Host. c Ascomata on host surface. d Section through ascoma (arrow indicates tube-like projection extending into the ascoma cavity). e Peridium. f Ascus. g-i Ascospores. j Broken pieces of outgrowths attached to the ascomata outer wall. k Spermatiophores arising from the margin of young ascoma. Scale bars: d = 100 μm. e = 50 μm, f, i = 20 μm, g-i = 10 μm, j = 5 μm (image from Hyde et al. 2020).