Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Saccardoëlla |
horizontalis |
Fallah & Shearer Mycologia 93(3): 580–581. 2001. |
| Class |
Order |
Family |
| Sordariomycetes |
|
|
|
| Synonymy: |
|
Description
|
| Habit: |
Superficial on submerged partially decomposed tree branches. |
|
| Ascomata: |
Ascomata 400–475 x 150–210 µm, scattered, pyriform, superficial with base partially immersed, horizontal, hyaline. |
|
| Peridium: |
Peridium 15.5–18 µm thick, composed of 4 to 6 layers of pseudoparenchymatic cells; cells 4–9.5 x 1.5–3 µm, of mostly textura angularis in median longitudinal section, outer cells at times of textura globosa 4–7.5 x 2.5–4 µm. |
|
| Beak: |
Beak 160–178 x 35–48 µm, eccentric, periphysate, cylindrical in the middle, broadly rounded at the apex |
|
| Hamathecium: |
Paraphyses 2.5–4.5 µm wide, broader at the base, tapering toward apex. |
|
| Ascus: |
Asci 144–180 x 14–18 µm, cylindrical, mostly in a single basal fascicle, MLZ-, cotton blue negative, with a shallow refractive apical apparatus, with 8 mostly uniseriate or overlapping biseriate ascospores |
|
| Ascospore: |
Ascospores 32–38 x 7–10 µm, fusiform, with rounded ends, hyaline, guttulate, with no sheath or appendages, with 7 (-8) septa; septa thick-walled and occasionally diagonal, not constricted at septa. |
|
| Sheath: |
None observed. |
|
| Appendage: |
None observed. |
|
| Culture: |
|
| Anamorph: |
None observed. |
|
Other info
|
| Type & Location: |
USA. WISCONSIN: Vilas Co., Big Muskellunge Lake, UTM Zone 16, 297663mE, 5097935mN, 46°00.306ÕN, 89°36.801ÕW, on submerged, partially decomposed branches, 26 Sept. 1997, PMF & JLC P3-69 (ILLS 54025). |
| Other Specimens: |
|
| Substratum: |
Woody debris. |
| Habitat: |
Lentic (Lake) |
| Distribution: |
U.S.A. |
| Pertinent Literature: |
|
| Comments: |
See ”Additional” for pictures. |
Additional Pictures
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