Dothideomycetes » Dothideomycetes, genera incertae sedis » Bryorella

Bryorella acrogena

Bryorella acrogena Döbbeler, Mitt. bot. StSamml., Münch. 14: 131 (1978)                                                 Fig. 1

Index Fungorum number: IF 309974 ; Facesoffungi number: FoF 06223

Saprobic or parasitic on leaves or the stem of wood moss (Hylocomiaceae) in terrestrial habitat. Sexual morph: Ascomata 111–225 μm high × 150–225 μm diam. (x̅ = 115.6 × 162 μm, n = 10), erumpent to completely superficial, solitary, spherical, globrous, dark brown to black, short papillate. Peridium wall 39–45 μm composed of 2 layers, an outer layer comprising small, heavily pigmented, thick-walled cells of textura angularis and an inner layer comprising lightly pigmented to hyaline, thin-walled cells of textura angularis. Hamathecium of dense, filamentous, branching, anastomosing, aseptate, hyaline pseudoparaphyses. Asci 115–130 μm × 13–17 μm (x̅ = 124.4 × 15.1 μm, n = 10), 8-spored, cylindrical, with a short pedicel or sessile, rounded at the apex, with an ocular chamber, sometimes bulbous expanded below. Ascospores 35–45 μm × 8–10 μm (x̅ = 38.4 × 10.3 μm, n = 10), uniseriate, elongated ellipsoidal or rarely spindle, constricted at septa, 3–7 transversely septate, obtuse apex, sometimes narrow below, hyaline when immature to dark brown when mature, thick-walled, smooth. Asexual morph: Undetermined.

Material examined – AUSTRIA, Europe, Tirol on stem of wood moss Hylocomium splendens (Hedw.) W.P. Schimp. (Hylocomiaceae), 24 September 1973, P. Döbbeler (UME 30243).

Economic significance – The genus Bryorella contribute to the decomposition processes of mosses and hepatics. Bryorella acrogena has been reported to destroy the growing apices of single shoots in pleurocarpous mosses (Döbbeler 1978).

 

 

Figure 1 – Bryorella acrogena (UME 30243). a–d Herbarium specimen and habit on leaf. e Section of an ascoma. f Peridium g Hamathecium. h–k Asci. l–o Ascospores. Scale bars: c, d = 500 μm, e = 100 μm, f = 20 μm, g, l–o = 10 μm, h–k = 50 μm.

 

Reference

Döbbeler P. 1978 – Moosbewohnende Ascomyceten I. Die pyrenocarpen, den Gametophyten besiedelnden Arten. – Mitt. Bot. Staatssamml. München 14, 1–360.

 

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