Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Didymosphaeria spinosa

Didymosphaeria spinosa E. Müller & S. Ahmad, Biologia 5: 3. 1959.

 Description: On surface seen as circular, raised, solitary to confluent, dark, up to 2 mm wide pustules. Stromata confined to the regions around the upper as a clypeus and lateral parts of ascomata and may occasionally be continuous to the adjacent ascoma, and composed of thin-walled, hyaline to pale brown, polygonal, pseudoparenchymatous cells at the sides and some may disintergrate. The clypeus is intra and subepidermal, composed of pale to dark brown, thick-walled, polygonal, pseudoparenchymatous cells. Ascomata conical with a flattened base, 625-700 μm wide, 230-275 μm high, erumpent, solitary, gregarious, ostiolate, with a 98-117 μm long and 34-40 μm wide neck lined the inside with periphyses. Peridium 20-29 μm wide, composed of thick-walled, hyaline towards the inside and brown compressed cells towards the outside; the peridium is 30-39 μm wide and 107-215 μm long and darker at the region below the neck; and at the base it is 5-10 μm wide, composed of thin-walled, hyaline, compressed cells. Asci 115-140 × 5-7 μm, cylindrical, bitunicate, basal in ascoma, shortly stipitate, 8-spored. Pseudoparaphyses narrowly cellular, up to 2 μm wide, branched, septate. Ascospores 15-20 × 3-5 μm, elliptic-fusiform, yellowish brown, 1-septate, verrucose, slightly constricted at the septum, upper cell slightly larger than the lower cell.

Taiwan, Nantou County, Piluchi, 21 Dec. 1995, NCHUPP-2406.

 Habitat: On stems of Smilax sp.

Pakistan, Taiwan.


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


W. H. Hsieh

 Note: null