Dothideomycetes » Dothideomycetes, genera incertae sedis » Hypobryon

Hypobryon poeltii

Hypobryon poeltii (Döbbeler) Döbbeler, Nova Hedwigia 37(1): 12 (1983)                                            Fig. 55–57

Punctillum poeltii Döbbeler, Mitt. bot. StSamml., Münch. 14: 203 (1978)

Index Fungorum number: IF322097; Facesoffungi number: FoF 06249

Saprobic on lower leaflets of Porella sp. Sexual morph: Ascomata 65–101 µm high × 55–99 µm diam., (x̅ = 76.9 × 83.8 µm, n = 20), globose to subglobose, black, scattered or in a group, superficial, carbonaceous, papillate. Peridium membranous, composed of 2 layers of cells, with the inner layer consisting of brown cells of textura angularis with the outer layer consisting of thicker dark-brown cells of textura globulosa. Hamathecium composed of dense, hyaline, pseudoparaphyses surrounding the asci. Asci not observed. Hymenium at the base is gelatinous. Ascospores 15–19 µm × 4–6 µm (x̅ = 17.2 × 5.5 µm, n = 20), ellipsoid, 2-3 septate, hyaline at first becoming pale brown at maturity, straight or slightly curved often slightly constricted. Asexual morph: Undetermined.

Material examined – AUSTRIA, Styria, surroundings of Graz: slopes between Stift Rein and Pleschwirt (Kehrerbach-Tal), northwestl, near Graz, on Porella sp (Porellaceae), 14 April 1974, P. Döbbeler s.d. (GZU 000291902, holotype).

Economic significance – Species of Hypobryon are bryophilous or grow on mosses (Döbbeler 1997).

Notes – We could not observe the asci of Hypobryon poeltii as the specimen was dry. The original author described the asci as ‘measuring about 25–35 µm × 12–21 µm, cylindrical at first becoming widely ellipsoidal or ovoid, 4-spored’.