Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Phyllachorella micheliae

Phyllachorella micheliae Sydow, Annls. Mycol. 12: 489. 1914.

 Description: Ascostromata well developed, not forming any leaf spot, hypophyllous, subepidermal, scattered or gregarious, cushion shaped, irregular or nearly orbicular, myltilocular, up to 5 mm across, with each locule provided with a papillate ostiole which is slightly erumpent. Wall of ascostromata is composed of thick-walled, brown, pseudoparenchymatous cells, polygonal in the upper part, and oblong, arranged longitudinal in the lateral part, and even strongly compressed between adjacent locules, cells of wall adjoining epidermis becoming darker than the cells beneath them, with innate mycelial strands protruding from the basal wall of ascostromata. Pseudothecia numerous, arranged in a layer, ovoid to ellipsoidal, up to 88-117 μm wide. Asci bitunicate, arising as a compact fascicle from a dome shaped mass of hyaline cells, clavate, short-stalked, apex rounded, 8-spored, 64-78 × 20-22 μm. Ascospores biseriate in the ascus, ellipsoidal to obovate, one celled, sometimes with a slightly median constriction, hyaline and granular, 12-16 × 6-7 μm.

Taiwan, Hsinchu County, Kuanwu, 1 Apr. 1991, NCHUPP-2225.

 Habitat: On living leaves of Michelia compressa (Maxim.) Sargent.

India, Taiwan.


Chen, CY. 1992; Kar, AK. and Maity, MK. 1971.


W. H. Hsieh

 Note: von Arx and Müller (1954) reduced the genus to a synonym of Vestergrenia, it was reintroduced by Kar Nad Maity (1971). Vestergrenia distinguish from Phyllachorella by “Asci raise at a flat ascogenous layer” (von Arx and Müller, 1975).