 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Mycosphaerella brassicola | |||
| Author： |
Basionym: Sphaeria brassicicola Duby, Botanicon Gallicum 2:712. 1830. Mycosphaerella brassicola (Duby) Lindau, Die Naturl. Pflanzenf. 1: 424. 1897. |
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| Description： |
Leaf spots necrotic, epiphyllous, circular, 0.5-1 cm, pale brown, inner often have scattered black dot and a black dot ring. Ascomata immersed, becoming erumpent, gregarious, some-times confluent, compressed globose to globose, 76-120 × 80-120 μm, slightly papillate. Peridium 8-20 μm wide, composed of 3-4 layers of reddish brown to dark brown, angular thin walled cells, with hyphae penetrating the host tissue, Pseudoparaphyses lacking. Asci 37-53 × 12-15 μm, bitunicate, basal, obovoid to clavate, with thickened inner wall at the apex and becoming thinner along the sides and base, 8-spored, maturing at different times. Ascospores 10-18 × 2.4-3.2 μm, fucoid, ends obtuse, straight or slightly curved, triseriate in the widest part of ascus, hyaline, smooth, 1-septate, in the middle or near the middle. | |||
| Specimens： |
Taiwan, Nantou County, Meifeng, Oct. 1999, NCHUPP-2544. |
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| Habitat： |
On living leaves of Brassica oleracea var. capitata DC. | |||
| Distribution： |
Europe, New Zealand, North America, Taiwan. |
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| References： |
Wang, CL. 2000. |
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| Provided： |
W. H. Hsieh |
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| Note： |
The species from Taiwan has somewhat smaller ascospores and the anamorph was not found. | |||