 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Dothideales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Lojkania melasperma | |||
| Author： |
Lojkania melasperma (Cooke) Barr, Mycotaxon 20: 15. 1984. Basionym: Psilosphaeria melasperma Cooke, Grevillea, 8: 118. 1880. |
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| Description： |
Subiculum superficial, extending on the host surface, appearing as a tuft of flexuous hyphae on the ascomata. Ascomata subglobose, 400-500 μm wide, 360-450 μm high, superficial with the base immersed, hyphal appendages arising from the outer wall, indiscernible from the subiculum and merging with it, apex usually rounded. Peridium 40-60 μm thick, composed of 13-16 layers of polygonal cells, the outmost cell layerts dark brown, turning smaller and less pigmented. Asci cylindrical, 155-200 × 13-16 μm, 8-spored, occasionally 6-7-spored, with long-stalked, stalk up to 70 μm long. Pseudoparaphyses branched, numerous, slender, 1-2 μm wide. Ascospores biconic, 19-25 × 7-9 μm, 1-septate at the middle, slightly constricted at the septum, with a longitudinal germ slit on each hemisphere, dark brown, smooth, uniseriate in ascus. | |||
| Specimens： |
Taiwan, Nantou County, Wushe, 21 Dec. 2001, NCHUPP-c0310. |
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| Habitat： |
On indet. wood. | |||
| Distribution： |
Europe, North America, Taiwan. |
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| References： |
Barr, ME. 1990; Chen, CY. and Hsieh, WH. 2003; Sivanesan, A. 1971. |
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| Provided： |
W. H. Hsieh |
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| Note： |
Sivanesan (1971) examined the specimens cited in the synonyms, and noticed the smaller ascospores of Neopeckia quercina. He retained it as a synonym, and consequently broadened the species delimitation to have large range of spore size. The Taiwan material has small ascospores like those of N. quercina (20-30 × 9-11 μm), but with narrower width. As the species concept of L. melasperma (Sivanesan, 1971, Barr, 1990) accepts diverse spore size, this material is assigned to it herein. The germ slits on ascospore were not ob-served until Yuan & Barr (1994). | |||