Hypobryon poeltii
Hypobryon poeltii (Döbbeler) Döbbeler, Nova Hedwigia 37(1): 12 (1983) Fig. 1–3
≡ Punctillum poeltii Döbbeler, Mitt. bot. StSamml., Münch. 14: 203 (1978)
Index Fungorum number: IF 108072; 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’.
Figure 1 – Punctillum poeltii (GZU 000291902, holotype). a, b Details of herbarium material. c, d Habit and appearance of ascomata on host surface e Vertical section of ascomata. f Peridium. g Squash mount of ascoma. h–j Ascospores. Scale bars: c = 2 mm, d = 500 µm, e, g = 50 µm, f = 20 µm, h–j = 10 µm
Figure 2 – Ascoma of Punctillum poeltii (holotype); redrawn from Döbbeler (1978).
Figure 3 – Ascospores of Punctillum poeltii (holotype); redrawn from Döbbeler (1978).
References
Döbbeler P. 1978 – Moosbewohnende Ascomyceten I. Die pyrenocarpen, den Gametophyten besiedelnden Arten. – Mitt. Bot. Staatssamml. München 14, 1–360.
Döbbeler P. 1997 – Biodiversity of bryophilous ascomycetes. Biodiversity and Conservation 6, 721–38.
Recent News
Recent paper to be publishedRecent Genus
NothocladosporiumPhillipsiella
Ampelomyces
Recent Species
Nothocladosporium syzygiiPhillipsiella atra
Curreya conorum
