Anthostomella tomicoides
Anthostomella tomicoides Sacc., Atti Soc. Veneto-Trent. Sci. Nat., Padova, Sér. 4 4: 101 (1875)
Index Fungorum number: IF 229539; Facesofungi number: FoF 03018
Saprobic on fallen stems of Salvia glutinosa L. Sexual morph: Ascomata 250–480 × 200–400 μm, immersed in the host epidermis, beneath a clypeus, visible as slightly raised blackened areas, dark brown to black, coriaceous, solitary, with a central periphysate ostiolar canal. Clypeus 50–80 μm thick, black, thickened near the neck, comprising host epidermis cells and blackened intracellular fungal hyphae. Peridium 25 μm thick, comprising several layers of cells, outwardly comprising dark brown, thick-walled cells of textura irregularis and inwardly comprising hyaline, thick-walled cells of textura angularis. Paraphyses 4–5 μm wide, filamentous, septate, hyaline, embedded in a gelatinous matrix. Asci 100–140 × 7–10 μm, 8-spored, unitunicate, cylindrical, short-pedicellate, with J+ apical ring bluing in Melzer’s reagent, wedged shaped. Ascospores 12–18 × 5–8 μm, uniseriate, bicellular, ellipsoidal, with a hyaline, basal, dwarf cell, larger cell dark brown, black in old material, surrounded by a very thin mucilaginous sheath, inconspicuous. Asexual morph: Undetermined.
Material examined: ITALY, Veneto, Treviso, on fallen stems of Salvia glutinosa (Lamiaceae), P.A. Saccardo (SF48010, lectotype).
GenBank:
Notes: Anthostomella tomicoides is one of the three Anthostomella species from Saccardo’s original collection (Eriksson 1966; Francis 1975). Anthostomella tomicoides with a true clypeus and appendiculate ascospores was selected as the type species by Francis (1975). However, she could not locate the material, but later Lu and Hyde (2000) located the material deposited at S and lectotypified it. This pattern of typification is followed by recent studies of Anthostomella (Lu and Hyde 2000; Daranagama et al. 2015, 2016e).
Figure x. Anthostomella tomicoides (lectotype). a Herbarium details. b, c Stromata in wood. D Black clypeus. e Cross section of stroma showing ascomata. f Peridium. g–i Asci. j, k Asci with apical ring bluing in Melzer’s reagent. l–o Ascospores. Scale bars b = 500 μm, c = 1000 μm, d, e = 100 μm, f = 30 μm, g–o = 10 μm.
References:
Daranagama DA, Hyde KD, Sir EB, Thambugala KM et al. 2018 – Towards a natural classification and backbone tree for Graphostromataceae, Hypoxylaceae, Lopadostomataceae and Xylariaceae. Fungal Diversity 88, 1–65.
Last update: 04 August 2021