Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Diatrypales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Munkovalsaria donacina

Munkovalsaria donacina (Niessl) Aptroot, Nova Hedwigia 60: 346. 1995.

Basionym: Microthelia donacina Niessl, Coimbra 28:31. 1881.

 Description: Ascomata subglobose, 350-487 μm wide, 429-527 μm high including the neck, immersed, sometimes confluent, occasionally with loosely interwoven hyphaeor prosenchymatous stroma between closely adjacent ascoma, scattered or aggregated in obscurely valsoid configulation; neck stout, blackened and thick-walled, erect or slightly oblique and inconspicuously convergent in aggregated ascomata, 107-175 μm wide, 156-190 μm long. Stromata present between convergent neaks. Other stroma , if present, limited to the vicinity of epidermal tissue, extensive or around the ostiole. Peridium 15-30 μm wide, composed of 6-9-layers of pseudoparenchymatous cells, compressed and paler towards the inside, polygonal and dark brown outside; the surface is covered by a layer of textura intricata which may extend into host tissue with sparse hyphae. Asci bitunicate, elliptic-clavate, basal and peripheral, tapering below into a long stipe, the spore-bearing part 39-53 × 10-12 μm, the stipe 43-78 μm long. Pseudoparaphyses trabeculate, numerous, septate, branched, up to 2.5 μm wide. Ascospores 14-18 × 5-7 μm, elliptical, thick-walled, reddish brown, smooth, 1-septate near in the middle, constricted at septum, the upper cell wider and pointed, and the lower cell longer and rounded.

Taiwan, Taichung County, 24 Sep. 1994, NCHUPP-2441.

 Habitat: On indet. wood.

China, South America, India, Philippines and Taiwan.


Aptroot, A. 1995a; Chen, CY and Hsieh, WH. 1996.


W. H. Hsieh

 Note: null