Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Dimerium meliolicola

Basionym: Pseudodimerium meliolicolum Petr., Ann. Mycol. 22: 21. 1924.

Dimerium meliolicola (Petr.) Hansf., Mycol. Pap. 15: 77. 1946.

 Description: Hyperparasitic on Schiffnerula parasitic on living leaves of Rubus. Mycelium superficial, composed of thin-walled, roughened, interwoven, olivaceous to pale brown hyphae, 1.5-4 μm wide, forming a mycelial mat. The mycelium of Schiffnerula easily distinguished by the thick-walled, hyphopodiate, dark brown hyphae, up to 9 μm wide. Ascomata globose, 80-130 μm in diam., smooth, scattered on mycelia. Ascomatal wall 6-10 μm wide, composed of cells forming a textura angularis, the outer region composed of 1-2 layers of polygonal, brown cells, and the inner of several layers of compressed, hyaline cells. Asci bitunicate, basal, 8-sporede, cylindrical-clavate to saccate, 44-67 × 10-16 μm, sessile to shortly stipitate, pseudoparaphysate. Pseudoparaphyses up to 3 μm wide, few in number. Ascospores overlapping uniseriate to biseriate, oblong to broadly clavate, straight to slightly curved, 10-13 × 4-6 μm, 1-septate slightly above the middle, rounded at apex and tapering below, brown.

Taiwan, Nantou County, Piluchi, 28 Apr. 1994, NCHUPP-2368.

 Habitat: Hyperparasitic on Schiffnerula sp. on living leaves of Rubus sp.

Africa, Europe, Taiwan.


Chen, CY. and Hsieh, WH. 1996; Hughes, SJ. 1993.


W. H. Hsieh

 Note: D. meliolicola is originally reported on Meliola. Although Schiffnerula is a different host genus, it is not unusually as many other fungi have been report paratize more than one fungal host genus.