Pyrenopeziza nervicola
(Desm.) Boud.
Study description
General: Minute cupulate ascomycete occurring on decaying fallen leaves, particularly Quercus or Fagus, apothecia sessile, cup-shaped, only 0.2-0.5 mm in diameter, with a greyish-cream hymenium displaying bluish tones, and a dark brown receptacle.
Marginal hairs: Cylindrical, smooth-walled, arranged parallel, 3-4 µm wide, containing dense brown intracellular pigment, apices rounded.
Excipulum: Ectal excipulum of textura globoso-angularis, composed of thick-walled cells 8-18 µm in diameter, filled with brown intracellular pigment.
Asci: Cylindric-clavate, 8-spored, 35-50 x 4.5-6 µm, with basal croziers, apical apparatus amyloid in Melzer's reagent.
Paraphyses: Filiform, branched from the base, septate, 2-3 µm wide, slightly projecting above asci.
Ascospores: Cylindrical to slightly fusiform, with one pole slightly more tapered, smooth, hyaline, thin-walled, 6-9.5 x 1.5-2.4 µm, contents homogeneous without evident guttules.
Herbarium vouchers: JTP1948/23 and JTP2412/25.
Marginal hairs: Cylindrical, smooth-walled, arranged parallel, 3-4 µm wide, containing dense brown intracellular pigment, apices rounded.
Excipulum: Ectal excipulum of textura globoso-angularis, composed of thick-walled cells 8-18 µm in diameter, filled with brown intracellular pigment.
Asci: Cylindric-clavate, 8-spored, 35-50 x 4.5-6 µm, with basal croziers, apical apparatus amyloid in Melzer's reagent.
Paraphyses: Filiform, branched from the base, septate, 2-3 µm wide, slightly projecting above asci.
Ascospores: Cylindrical to slightly fusiform, with one pole slightly more tapered, smooth, hyaline, thin-walled, 6-9.5 x 1.5-2.4 µm, contents homogeneous without evident guttules.
Herbarium vouchers: JTP1948/23 and JTP2412/25.
Geographic references
Map generated from global occurrence data from GBIF. GBIF.
Study measurements
Values in Microns (µm)Macroscopic gallery
1 / 4Pyrenopeziza nervicola - 1 - IMG_3703
Microscopic gallery
1 / 24Pyrenopeziza nervicola - 10 - Excípulo