Bellemerella ritae , holotype (GZU). A: Habitus; B: Detail of hymenium, arrow points to interascal filaments; C: Ascus with ascospores; D: Ascospore; E: Section of perithecium; F: Detail of the wall in the upper part of perithecium, external brown part showing clear irregularities, inner part hyaline; G: Detail of ostiole with periphyses; H: Detail of outer wall of the lower part of perithecium. A, D, F, G & H: in lactophenol cotton blue. C & D: in water. Scale bars: A: 220 μm, C: 6.5 μm, D: 4.5 μm, E: 40 μm, B, F, G, H: 10 μm. 

Contexts in source publication

Context 1

... taken with a Canon PowerShot G2 digital camera fitted to the microscope. Abbreviations: K = 10-35% potassium hydroxide in water; I = Lugol's iodine solution; K/I = pretreatment with K before I. Non-lichenized lichenicolous fungus. Ascomata perithecioid, black, semi-immersed to immersed in host thallus although sometimes are almost superficial ( Fig. 1.A); globose to ± discoid, c. 135-210 µm in diameter ( Fig. 1.E), with a markedly rough surface; the ostiolar zone depressed, with a few radial fissures around the ostiole. Ascomatal wall c. 23-44 µm thick, pseudoparenchymatous, two-layered; inner layer c. 8-23 µm thick, cells irregularly rounded in their outermost part and elongated in ...

Context 2

... microscope. Abbreviations: K = 10-35% potassium hydroxide in water; I = Lugol's iodine solution; K/I = pretreatment with K before I. Non-lichenized lichenicolous fungus. Ascomata perithecioid, black, semi-immersed to immersed in host thallus although sometimes are almost superficial ( Fig. 1.A); globose to ± discoid, c. 135-210 µm in diameter ( Fig. 1.E), with a markedly rough surface; the ostiolar zone depressed, with a few radial fissures around the ostiole. Ascomatal wall c. 23-44 µm thick, pseudoparenchymatous, two-layered; inner layer c. 8-23 µm thick, cells irregularly rounded in their outermost part and elongated in the innermost part; outer layer c. 14-25 µm thick, cells ...

Context 3

... zone depressed, with a few radial fissures around the ostiole. Ascomatal wall c. 23-44 µm thick, pseudoparenchymatous, two-layered; inner layer c. 8-23 µm thick, cells irregularly rounded in their outermost part and elongated in the innermost part; outer layer c. 14-25 µm thick, cells rather thick and ± isodiametric, external surface uneven (Figs. 1.F & H). Periphyses short, scarcely visible around the ostiole or sometimes reaching the upper part of the internal layer ( Fig. 1.G), short, 4-9 × 1.5-2.5 µm, formed by 2-4 cells, hyaline except those placed in the outer part of the ostiole. Hymenium I+ red, K/I+ blue, with long evanescent interascal filaments among the asci, possibly ...

Context 4

... inner layer c. 8-23 µm thick, cells irregularly rounded in their outermost part and elongated in the innermost part; outer layer c. 14-25 µm thick, cells rather thick and ± isodiametric, external surface uneven (Figs. 1.F & H). Periphyses short, scarcely visible around the ostiole or sometimes reaching the upper part of the internal layer ( Fig. 1.G), short, 4-9 × 1.5-2.5 µm, formed by 2-4 cells, hyaline except those placed in the outer part of the ostiole. Hymenium I+ red, K/I+ blue, with long evanescent interascal filaments among the asci, possibly corresponding to paraphysoids (Fig. 1.B). Asci bitunicate, clavate to subcylindrical, non-amyloid, 43-55 × 9-14 µm, containing 32 ...

Context 5

... short, scarcely visible around the ostiole or sometimes reaching the upper part of the internal layer ( Fig. 1.G), short, 4-9 × 1.5-2.5 µm, formed by 2-4 cells, hyaline except those placed in the outer part of the ostiole. Hymenium I+ red, K/I+ blue, with long evanescent interascal filaments among the asci, possibly corresponding to paraphysoids (Fig. 1.B). Asci bitunicate, clavate to subcylindrical, non-amyloid, 43-55 × 9-14 µm, containing 32 ascospores. Ascospores pale brown, 1-septate, thin walled, cylindrical-oblong, with rounded apices, wall smooth to faintly granulose, usually one oil-drop present in each cell (Fig. 1.D), old ascospores constricted at the septum, (7.5)8-8.82-10 ...

Context 6

... filaments among the asci, possibly corresponding to paraphysoids (Fig. 1.B). Asci bitunicate, clavate to subcylindrical, non-amyloid, 43-55 × 9-14 µm, containing 32 ascospores. Ascospores pale brown, 1-septate, thin walled, cylindrical-oblong, with rounded apices, wall smooth to faintly granulose, usually one oil-drop present in each cell (Fig. 1.D), old ascospores constricted at the septum, (7.5)8-8.82-10 (-11) × (2-)2.5-3.01-3.5(-4) µm, length/width ratio (2.57)2.83-2.93-3.2(-3.75) [70 ascospores ...