Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Nais |
aquatica |
K.D. Hyde |
| Class |
Order |
Family |
| Sordariomycetes |
Halosphaeriales |
Halosphaeriaceae |
|
| Synonymy: |
|
Description
|
| Habit: |
Saprobic, immersed or partly immersed on dead submerged wood. |
|
| Ascomata: |
Ascomata immersed or semi-immersed, membranous, globose to ampulliform, ostiole central, beaked, black, solitary or gregarious |
|
| Peridium: |
Peridium thin, a single stratum of elongate cells |
|
| Beak: |
Beak short and periphysate. |
|
| Hamathecium: |
Paraphyses not observed; catenophyses numerous. |
|
| Ascus: |
Asci deliquescent, 8-spored, saccate, pedunculate, thin-walled throughout, developing from the base of the ascoma, 82 x 46 µm. |
|
| Ascospore: |
Ascospores hyaline, ellipsoid, bi-celled, not constricted at the septa, with a band of refringent globules around the equator, 82 x 46 µm. |
|
| Sheath: |
None reported. |
|
| Appendage: |
Appendages mostly absent, although present in two ascomata sampled on the same wood. These appendages were hamate at first, then unravelled in water to form filamentous threads. |
|
| Culture: |
Colonies on potato dextrose agar (PDA) slow-growing, felty irregularly zonate, grey with pink aerial mycelium, with submersed globose brown chlamydospores, 8-12 µm, but no ascomata produced. |
| Anamorph: |
|
|
Other info
|
| Type & Location: |
Submerged wood was collected from Millaa Millaa Falls and the Clohesy River in north Queensland |
| Other Specimens: |
|
| Substratum: |
Submerged woody debris. |
| Habitat: |
Lotic; on submerged wood in a river. |
| Distribution: |
Australia |
| Pertinent Literature: |
Hyde, K.D. 1992. Tropical Australian Freshwater Fungi. II. Nais Aquatica.. Australian Journal of Systematic Botany 5:117-124. |
| Comments: |
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Additional Pictures
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