Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Sordariales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Bertia biseptata

Bertia moriformis (Tode :Fr.) de Not. var. moriformis, Giorn. Bot. Ital. 1: 335. 1884.

Basionym: Sphaeria moriformis , Tode: Fr., Fungi Mecklenb. Sel., Fasc., 2:22, 1791:Syst.Mycol.2: 458. 1823.

Bertia biseptata Sivan. & W. H. Hsieh, Mycol. Res. 99: 919-922. 1995.

 Description: Ascomata perithecial, black, superficial, globose to somewhat turbinate, scattered to aggregated, coarsely tuberculate, with a broad sterile base, 1100-1900 × 600-850 μm, occasionally collapsing apically when dry. The region below the somewhat conical apex is filled with evnescent, indistinct hyaline cells. Peridium up to 117.5 μm thick, composed of two layers; an outer region of 7-9 layers of thick-walled brown polygonal cells with distinct Munk pores and an inner region of 3-5 layers composed of hyaline, thin-walled compressed pseudoparenchymatous cells. Asci non-fissitunicate, clavate, 100-140 × 12.5-15 μm, 8-spored, deliquescent, with a pedicel up to 62 μm long. Ascospores biseriate to partially uniseriate in the ascus, hyaline, 1-2-septate, mostly 2-septate with the first septum median or almost median and the second septum median in the basal cell which is distinctly curved upwards in the lower end, smooth, 25-35 × 5-7.5 μm.

Taiwan, Nantou Hsien, Tsuifeng, Feb. 1992, holotype IMI 361024 and isotype NCHUPP 10a.s examined : Taiwan, Nantou Hsien, Tsuifeng, 26 Feb.1992, NCHUPP-2267.

 Habitat: On indet. wood. On indet. wood.

Europe, America, Mainland China, Taiwan.


Corlett, M and Krüg, JC. 1984; Subramanian, CV and Sekar, G.. 1990.


W. H. Hsieh

 Note: Three species of Bertia with one consisting of three varieties have hitherto been described (Sivanesan, 1978; Corlett & Krüg, 1984; Krüg & Corlett, 1988, Subramanian & Sekar, 1990). This species can be easily separated from the others by its unique 1-2-septated ascospores curving upwards at the basal end. Provide by W. H. Hsieh Bertia moriformis var. moriformis (Fig. 255) Ascomata superficial, turbinate with a broadly sterile base from which a few hyphal strands penetrate into the underlying wood, scattered or gregarious and basally adnate, coarsely tuberculate on the surface, rarely collapsing on drying, non-ostiolate, up to 1040 μm high and 741 μm wide. Peridium of two layered, pseudoparenchymatous, externally composed of brown, thick-walled, large cells with Munk pore between adjacent cells, extending below to form a sterile base, internal cells are hyaline, thin-walled and compressed. The apical region in the centrum is composed of dome-like Quellkörper which is made up of thin-walled, concentrically arranged cells in a mucilaginous matrix. Asci deliquescing early, unitunicate, arising from a basal cushion, clavate, 8-spored, 190-286 × 16-23 μm, long-stalked up to 128 μm. Ascospores irregularly fasciculate in asci, hyaline, allantoid, rounded to acute in each end, mostly 1-septate, rarely 2 or 3-septate, 38-69 × 7-10 μm. This species is very common in Europe (Dennis, 1978:Müller & v. Arx, 1962) and America (Corlett & Krüg, 1984), and also reported in China (Eriksson and Yue, 1988). This species usually does not collapse at the apex on drying (Nannfeldt, 1975), but the Taiwan species occasionally collapsed to form cupulate ascomata.