Freshwater Ascomycetes - Species Monograph
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| Genus |
Species |
Author |
| Coniochaeta |
renispora |
J.L. Crane and Shearer |
| Class |
Order |
Family |
| Sordariomycetes |
Coniochaetales |
Coniochaetaceae |
|
| Synonymy: |
|
Description
|
| Habit: |
Saprobic, ascomata immersed to partly immersed in submerged wood. |
|
| Ascomata: |
Ascomata immersed, globose, asetose, ostiolate, 428-530 x 420-594 µm. |
|
| Peridium: |
Peridium glabrous, light brown, of thin-walled textura angularis in face view, in longitudinal section with 6-10 cell layers, 18-20 µm thick. Peridial cells pseudoparenchymatous, irregularly shaped, radially compressed. |
|
| Beak: |
Beak papillate, 17-23 µm, wall composed of brown, thick-walled textura prismatica. Periphysate, composed of oval to pyriform cells, constricted at septa, 15-20 x 2.2-3.3 µm. Periphyses composed of oval to pyriform cells, constricted at septa, 15.5-20.0 (-27) x 2.2-3.3 µm. |
|
| Hamathecium: |
Paraphyses numerous, filamentous, multiseptate, simple, 94-100 x 2.0-2.2 µm. |
|
| Ascus: |
Asci 34-57 (-64) x 11.0-15.5 µm, cylindric to clavate, short-stalked, thin-walled, without an apical apparatus, deliquescent, containing eight, irregularly biseriate ascospores. |
|
| Ascospore: |
Ascospores extruded and accumulating as shiny black mounds on surface of substrate, one-celled, inequilateral, reniform or one-side convex, the other flat, occasionally lacrymoid to obpyriform, dark brown, smooth-walled, with a hyaline germ slit measuring 6.7-8.9 µm long, containing a single guttule, (8.9-) 11.0-13.3 x 6.7-8.9 (-10) µm. |
|
| Sheath: |
None observed. |
|
| Appendage: |
None observed. |
|
| Culture: |
|
| Anamorph: |
None observed. |
|
Other info
|
| Type & Location: |
HOLOTYPE: USA, Arkansas, St. Francis River at Phillips Bayou, St. Francis National Forest, 14 November 1992, J.L. Crane and C.A. Shearer, A-102-1, ILLS 51242. |
| Other Specimens: |
|
| Substratum: |
|
| Habitat: |
|
| Distribution: |
USA (AR) |
| Pertinent Literature: |
Shearer, C.A. & J.L. Crane. 1995. A New Coniochaeta from Fresh Water. Mycotaxon 56: 107-110. |
| Comments: |
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Additional Pictures
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