Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Ascotaiwania |
hughesii |
Fallah, J.L. Crane & Shearer |
| Class |
Order |
Family |
| Sordariomycetes |
Xylariales |
Amphisphaeriaceae |
|
| Synonymy: |
|
Description
|
| Habit: |
Saprobic on submerged; ascomata immersed in wood with beaks protruding. |
|
| Ascomata: |
Ascomata 580-630 x 348-380 µm, immersed in decorticated wood, scattered, obpyriform, straight or titlted, protruding beaks, membranous, black. |
|
| Peridium: |
Peridium 40-45 µm wide, comprised of several layers, brown, of textura angularis in surface view, composed of 7-9(-12) compressed brown cells; cells 4.5-9(-13) x 1.5-2 µm. |
|
| Beak: |
Beaks 210-240(-530) x 136-150(-170) µm, central, membranous, cylindrical to conical, broadly rounded at apex, periphysate, ostiolate. |
|
| Hamathecium: |
Paraphyses branched, septate, 1.5-3 µm wide. |
|
| Ascus: |
Asci 263-347 x (6.5-)9-10 µm, unitunicate, long-cylindrical, 8-spored, persistent, tapering gradually to a long stalk, with an apical ring, 9-13.5 µm, J-, staining blue in aqueous cotton blue. |
|
| Ascospore: |
Ascospores (18-)20-30(-36) x 6.5-8 µm, fusiform, uniseriate, straight or curved, smooth-walled, three septate, central cells brown, 9-11(-14) µm long; end cells hyaline, rounded at apex, 4.5-5.5 µm wide at base. |
|
| Sheath: |
Not present. |
|
| Appendage: |
Not present. |
|
| Culture: |
|
| Anamorph: |
Helicoon farinosum Linder (ILLS 53606). |
|
Other info
|
| Type & Location: |
USA Wisconsin: VIlas Co., Sparkling Lake, on submerged wood, 8 Aug 1994, PMF P2-6. (ILLS 53605). |
| Other Specimens: |
USA, Wisconsin: VIlas Co., Sparkling Lake, on submerged wood, 27 June 1995, PMF P2-33 (ILLS 53607); 28 Oct. 1995, PMF & L. Crane P2-52. (ILLS 53608); Trout Lake, on submerged wood, 18 Sept 1996, PMF P1-74 (53609); 1 May 1997, PMF P1-100. (ILLS 53610). |
| Substratum: |
submerged wood |
| Habitat: |
lentic (lake) |
| Distribution: |
USA (WI). |
| Pertinent Literature: |
Canadian Journal of Botany 77: 87-92 |
| Comments: |
Etymology: In honor of S.J. Hughes for his outstanding contributions to mycology. |
Additional Pictures
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