Otidea guttulata M. Zeng, Q. Zhao & K.D. Hyde, sp. nov. FIGURE 13
MycoBank number: MB; Index Fungorum number: IF; Facesoffungi number: FoF 12599;
Saprobic on soil. Sexual morph: Apothecia 1−3 cm broad, 1.5−4 cm high, scattered to gregarious, ear-shaped to cupulate, split, substipitate, basal with white to cream tomentum and mycelium. Receptacle surface yellow, wrinkled, margin mostly split. Hymenium ocher, slightly daker in color than receptacle surface, nearly smooth. Ectal excipulum 75−140 µm, composed of textura angularis to textura globulosa, 23−31 × 17−21 μm cells, yellow, with yellow hypha-like hairs, 5−8 μm, present resinous exudates. Medullary excipulum 320−580 μm, composed of textura intricata, 4−10 µm broad, yellow hyphae. Paraphyses 2−3 µm broad, with yellow pigments, filiform, straight or curved at the apex, exceeding the asci slightly, with one or two low notches. Asci 180−215 × 11−14 μm, 8-spored, cylindrical, operculate, inamyloid. Ascospores [20/1/1, in H2O] (14.1−) 14.9−16.3 (−16.9) × (8.0−) 8.8−10.0 (−10.2) μm (Q = 1.54−1.81, Q = 1.66±0.08), broadly ellipsoid, hyaline, uniseriate, equilateral, rounded at the ends, uniguttulate to biguttulata, rarely with additional small granules, smooth. Asexual morph: Unknown.
FIGURE 13. Otidea guttulata. a–e Typic mature specimens. f Ectal excipulum. g Asci and paraphyses. h–j Asci (i Asci in Gongo red. j Asci in Melzer Reagent). k Apex of an ascus. l–o Ascospores. Scale bars: f –j = 50 μm. k, l, n, o = 10 μm. m = 20 μm.