 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Didymosphaeria spinosa | |||
| Author： |
Didymosphaeria spinosa E. Müller & S. Ahmad, Biologia 5: 3. 1959. |
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| 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. | |||
| Specimens： |
Taiwan, Nantou County, Piluchi, 21 Dec. 1995, NCHUPP-2406. |
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| Habitat： |
On stems of Smilax sp. | |||
| Distribution： |
Pakistan, Taiwan. |
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| References： |
Aptroot, A. 1995a; Aptroot, A. 1995b; Chen, CY and Hsieh, WH. 1996. |
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| Provided： |
W. H. Hsieh |
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| Note： |
null | |||