Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Annulatascus |
aquaticus |
W. H. Ho, K. D. Hyde et I.J. Hodgkiss |
| Class |
Order |
Family |
| Sordariomycetes |
Inc. sed. |
Annulatascaceae |
|
| Synonymy: |
|
Description
|
| Habit: |
Ascomata immersed, partly immersed or sometimes superficial on wood; clustered. |
|
| Ascomata: |
Ascomata 240-600 µm diam., 220-600 µm high, globose to subglobose, mostly immersed, occasionally superficial, coriaceous, solitary, dark brown, ostiolate, and beaked. |
|
| Peridium: |
Peridium of textura angularis in surface view, comprising a few layers of brown walled compressed cells. |
|
| Beak: |
Beak 400-800 x 60-80 µm, cylindrical, dark brown, and periphysate. |
|
| Hamathecium: |
Paraphyses 3-4.5 µm wide at the base, hypha-like, numerous, septate, hyaline and tapering distally. |
|
| Ascus: |
Asci 150-175 x 10-12 µm (x = 165 x 11 µm, n = 10), 8-spored, cylindrical, thin-walled, persistent, pedicellate, with a relatively massive refractive, J-apical ring (4.5-5 µm diam., 3.5-4 µm long). |
|
| Ascospore: |
Ascospores 19-24 x 6-7 µm (x = 22 x 6.5 µm, n = 25), overlapping uniseriate, hyaline, ellipsoidal, with acute ends, unicellular, containing 2(-4) large lipid globules at maturity, smooth, thin-walled, with a mucilaginous sheath observed at the ultrastructural level. |
|
| Sheath: |
Ascospore sheath muscilaginous sheath observed at ultrastructural level. |
|
| Appendage: |
None present. |
|
| Culture: |
|
| Anamorph: |
Unknown. |
|
Other info
|
| Type & Location: |
Hong Kong, Tai Po Kau Forest Stream, on submerged decaying wood, 27 June 1996, K. D. Hyde WH238 (HKU(M) 4526). |
| Other Specimens: |
|
| Substratum: |
submerged decaying wood |
| Habitat: |
lotic (stream) |
| Distribution: |
Hong Kong |
| Pertinent Literature: |
Fungal Diversity 2: 119-128 |
| Comments: |
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Additional Pictures
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