 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Lophiostoma caulium | |||
| Author： |
Lophiostoma caulium (Fr.) Ces. de Not., Comm. Soc. Critt. Ital. 1: 219. 1863. Basionym: Sphaeria caulilium Fr., Syst. Myc. 2: 509. 1823. |
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| Description： |
Ascomata scattered, 300-360 μm wide, 280-420 μm high, rounded or flattened at the base, immersed, raising the overlapping host tissue, the upper portion of ascoma covered by a clypeus to give the ascoma superficial appearance; clypeus 10-15 μm thick, merging with the upper ascomatal wall, neck laterally compressed, up to 120 μm high, with a slit-like ostiole, the slit 80-150 μm long. Peridium 10-16 μm thick, composed of 4-6 layers of pale brown, elongate cells. Asci broadly clavate, 100-120 × 14-18 μm, short-stalked, stalk up to 30 μm long. Pseudoparaphyses branched, 2-3 μm wide. Ascospores broadly fusiform, 27-36 × 5.5-7 μm, slightly curved, 7-8-septed, usually guttulate in each cell, inconspicuously constricted at the first septum, the cell above the first septum broadest, smooth, yellowish brown, overlapping biseriate to tetraseriate in ascus, surrounded by a thin mucilaginous sheath which projects out to form appendages at each end. | |||
| Specimens： |
Taiwan, Nantou County, Lushan, 28 Jan. 2002, NCHUPP-c:0518. |
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| Habitat： |
On herbaceous stem. | |||
| Distribution： |
Europe, Taiwan. |
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| References： |
Chen, CY. and Hsieh, WH. 2003; Holm, L. and Holm, K. 1988. |
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| Provided： |
W. H. Hsieh |
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| Note： |
This is a very polymorphous species with a wide range of spore septation, from 3 septa to 7 septa. Holm and Holm (1988) considered these variations are continuous and largely divided this species into five varieties. The Taiwan material matches the description of variety ‘d’, but has up to 8 septate ascospores. This subtle difference can also be regarded as a progress of continuous variations. | |||