Thaxteriella corticola
Thaxteriella corticola Petr., Annls mycol. 22(1/2): 63 (1924).
Index Fungorum number: IF 262097; Facesoffungi number: FoF 09801, Fig. 1402, 1403
Description:
Saprobic on woody substrate. Sexual morph: Ascomata 300–350 µm diam., 220–270 µm high, superficial with a setose surface, scattered to crowded, globose to turbinate, black, shiny. Peridium 15–30 µm composed of pale brown, small, thin-walled cells of textura angularis. Hamathecium 2.5–3.5 µm of filamentous, numerous, aseptate, broad cellular pseudoparaphyses, embedded in a gelatinous matrix. Asci 108–125 µm × 25–30 µm (x̅ = 117 × 27.5 µm, n = 10), 8-spored, fissitunicate, cylindrical to cylindric-clavate, with a short pedicel or sessile, rounded at the apex, with an ocular chamber. Ascospores 35–41 µm × 7–9 µm (x̅ = 39.4 × 8.7 µm, n = 10), overlapping or 3–4-seriate, fusiform to cylindrical, hyaline to pale brown, multi-septate, 8-transverse septate, mostly non constricted at the septa, smooth-walled. Asexual morph: Unknown.
Material examined: The United States, Florida, Levy, Gulf Hammock, on fallen branch of hardwood, 4 September 1954, A. S. Thoads (FLAS-F-44732).
Fig. 1 Thaxteriella corticola (FLAS-F-44732). a–c Herbarium specimen and appearance of ascomata on host substrate. d Section through ascoma. e Peridium. f Cellular pseudoparaphyses. g–j Asci. k–n Ascospores. Scale bars: c = 500 μm, d = 100 μm, e, k–n = 20 μm, f = 10 μm, g–j = 50 μm.
