 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Dermatodothis euonymi | |||
| Author： |
Dermatodothis euonymi W. H. Hsieh & C. Y. Chen, Bot. Bull. Acad. Sinica 34: 271-273. 1993. |
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| Description： |
Stromata epiphyllous, not forming any leaf spot, subcuticular, crustose, multiloculate, up to 2 mm in diam., each locule either teleomorphic or anamorphic, occasionally both states are found in the same stroma. The host tissue beneath stroma is filled with interwoven hyphae and is discoloured. The locule of the teleomorph is conical, with a flattened base, ostiolate, 190-363 μm wide, 112-212 μm high. Asci basal, bitunicate, cylindrical, subssesile, 100-118 × 10-13 μm, 8-spored, pseudoparenchymatous. Ascospores fusiform, rounded at each end, 3 septate, constricted at the septa, olivaceous to dark brown, 18-22 × 5-7 μm, overlapping uniseriate to biseriate in the ascus. | |||
| Specimens： |
Taiwan, Hualien County, Tzuen, 26 Nov. 1991, holotype NCHUPP-2250. |
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| Habitat： |
On living leaves of Euonymus acutorhombifolia Hay. | |||
| Distribution： |
Taiwan. |
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| References： |
Katumoto, K. 1983. |
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| Provided： |
W. H. Hsieh |
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| Note： |
In stromata a few pycnidial locules containing brown pycnidiospores are present: they morphologically resemble Hendersonula with 3-septate brownish conidia. Similar Hendersonula-like anamorphs have been reported for some species of Dermatodothis (Theissen and Sydow, 1914; Sydow, 1923; Müller, 1975) and another Hendersonula hyperparasite. H. yakushimensis Kobayashi was also present on D. zeylanica Syd. (Katumoto, 1983). Species of Dermatodothis have only been reported on members of the family Symplocaceae, Buddleiaceae, Fagaceae and Compositae from Asia and South America. Euonymus however, belongs to the family Celastraceae. D. buddleyae (Stév.) von Arx & E. Müller and D. zeylanica have 3-septate ascospores like D. euonymi. However, the ascospores of D. buddleyae are larger with a rough surface and those of D. zeylanica are smaller than those of D. euonymi. | |||