Ascomata densely scattered, immersed, 480-720 μm wide, 380-480 μm high, only the ostiole protruding through the host tissue, rounded or flattened at base, ostiolar canal lined with periphyses and filled with pseudoparaphyses extending from underlying ascus-bearing locule, neck if present up to 200 μm long. Peridium various in thickeness, usually intergrating with the host tissue so that the delimitation between peridium and host tissue becomes blurring, peridium around the ostiole thickest, externally covered with hyphae interwoven with host tissue, which gives the appearance of clypeus. Asci clavate, 110-140 × 20-26 μm, short to long-stalked, stalk up to 80 μm long. Pseudoparaphyses branched, 2-3 μm wide. Ascospores broadly fusiform, 24-30 × 9-11 μm, 1-septate slightly below the middle, constricted at the septum, broadest at above the septum, sometimes with inconspicuous two additional septa in age, verrucose, brown, overlapping biseriate in the upper part of asci, becoming uniseriate toward the lower part.
Specimens：
Taiwan, Nantou County, Wushe, 21 Dec. 2001, NCHUPP-c0301.
Habitat：
On indet. wood.
Distribution：
Asia, Europe, North America, Taiwan.
References：
Barr, ME. 1990; Chen, CY. and Hsieh, WH. 2003.
Provided：
W. H. Hsieh
Note：
This species is the type of Trematosphaeria. The ornamentation of ascospores, as being verrucose, is first discovered herein.
Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales 
BCRC Number：