Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Melanomma |
pulvis-pyrius |
(Pers.: Fr.) Fuckel, Jahrb. Nassauischen Vereins Naturk. 23- 24: 169. 1870. |
| Class |
Order |
Family |
| Dothideomycetes |
Melanommatales |
Melanommataceae |
|
| Synonymy: |
≡ Sphaeria pulvis-pyrius Pers. : Fr., Syst. Mycol. 2: 458. 1823.
= S. conglobata Fr.: Fr., Syst. Mycol. 2: 414. 1823.
= S. verrucaria Fr. :Fr. Syst. Mycol. 2: 496. 1823.
≡ Melanomma verrucaria (Fr. :Fr.) Sacc., Syll. Fung. 2:107. 1883.
= Sphaeria lenarsii Westendorp, Bull. Soc. Bot. Belgique 5: 36. 1866.
≡ Melanomma lenarsii (Westendorp) Sacc., Michelia 1: 345. 1878.
= Melanomma subsparsa Fuckel, Jahrb. Nassauischen Vereins Naturk. 23-24: 160. 1870.
= Sphaeria erraticula Karsten, Acta Soc. Fauna Fl. Fenn. 2: 48. 1885.
≡ Melanomma erraticulum (Karsten) Berlese & Voglino, Syll. Fung. Addit. 148. 1886.
= Melanomma asterostomum Ellis & Everhart, Proc. Acad. Natu. Sci.Philadelphia 46: 328. 1894.
= Gibberidea alnicola Rehm, Ann. Mycol. 5: 540. 1907. |
Description
|
| Habit: |
On woody debris. |
|
| Ascomata: |
Ascomata 380–496 x 300–320 µm, scattered or in groups, immersed becoming erumpent, globose or pyriform, sometimes collabent, dull black, carbonaceous, smooth, with a slit-like opening |
|
| Peridium: |
Peridium 30–50 µm thick, composed of 3 to 5 layers of pseudoparenchymatic cells, of textura angularis, hyaline toward inside, cells 3–8 x 2–4 µm. |
|
| Beak: |
Beak 160–184 x 98–104 µm, conical, periphysate, central. |
|
| Hamathecium: |
Pseudoparaphyses trabeculate, < 1 µm wide, in gel matrix, anastomosing. |
|
| Ascus: |
Asci 101.5–125 x 8–11.5 µm, cylindro-clavate, tapering to a hoof-shaped stipe, fissitunicate, with small ocular chamber, with 8 uniseriate to overlapping biseriate ascospores. |
|
| Ascospore: |
Ascospores (14-) 16–24 (-25) x 4–9 µm, ellipsoid to broadly fusiform, rounded at the apices, brown, with mostly 3-septa and occasionally with 4 or 5 septa, constricted strongly at middle septum and less so at other septa, second cell wider, guttulate, granular. |
|
| Sheath: |
None present. |
|
| Appendage: |
None present. |
|
| Culture: |
|
| Anamorph: |
|
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Other info
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| Type & Location: |
|
| Other Specimens: |
USA. WISCONSIN: Vilas Co., Trout Lake, UTM Zone 16, 293196mE, 5098921mN, 46°00.838ÕN, 89°40.283ÕW, on submerged, partially decomposed wood, 16 May 1995, PMF P1-6 (ILLS 54048). |
| Substratum: |
On woody decorticated woody debris. |
| Habitat: |
Mostly in terrestrial habitats. |
| Distribution: |
Temperate North America, Europe |
| Pertinent Literature: |
Fallah & Shearer |
| Comments: |
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Additional Pictures
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