Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Ascosacculus |
aquaticus |
(K.D. Hyde) J. Campb., J.L. Anderson & Shearer |
| Class |
Order |
Family |
| Sordariomycetes |
Halosphaeriales |
|
Genbank ID:
232014
|
| Synonymy: |
Basionym: Halosarpheia aquatica K. D. Hyde |
Description
|
| Habit: |
On submerged wood in freshwater habitats. |
|
| Ascomata: |
Ascomata 180–205 x 130–164 µm, solitary or gregarious, immersed to partly immersed, subglobose or pyriform, light brown or brown, membranous, ostiolate. |
|
| Peridium: |
Peridium up to 14 µm thick, composed of 2–3 layers of brown, polygonal thin walled cells, in surface view of textura angularis. |
|
| Beak: |
Necks central, long or short, up to 520 µm long, 32–42 µm diam., periphysate. |
|
| Hamathecium: |
Catenophysate. |
|
| Ascus: |
Asci 56–30 µm (single measurement), 8 spored, saccate, thin-walled, lacking an apical apparatus and pore, with a knob-like pedicel, deliquescing early. |
|
| Ascospore: |
Ascospores 33.5–64 x 7–11 µm, fusiform or cylindrical, hyaline, thin-walled, 1 septate, septum submedial, highly guttulate, coiled hamate bipolar appendages. |
|
| Sheath: |
Not observed. |
|
| Appendage: |
Appendages bipolar, at first hamate, unfurling in water to form a very long, sticky filament. |
|
| Culture: |
See Hyde 1992. |
| Anamorph: |
Oval chlamydospores formed in culture. |
|
Other info
|
| Type & Location: |
AUSTRALIA: north Queensland. Clohesy River, on submerged wood, August 1990, K.D. Hyde, BRIP 19331. |
| Other Specimens: |
COSTA RICA. HEREDIA: La Selva Biological Station, on submerged decorticated wood, 19 May 2000, J. Anderson and R. Wulfen, A444-1 (Ill). |
| Substratum: |
Submerged woody debris. |
| Habitat: |
Lotic, freshwater. |
| Distribution: |
Australia, Costa Rica, USA (FL) |
| Pertinent Literature: |
Hyde, 1992; Campbell et al., 2003. |
| Comments: |
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Additional Pictures
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