 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Xylariales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Anthostomella yushaniae | |||
| Author： |
Anthostomella yushaniae W. H. Hsieh & C. Y. Chen, China-Graphics Taichung, Taiwan: 36-39 2000. |
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| Description： |
Ascomata depressed globose, 780-860 μm wide, 660-750 μm high, immersed, with a periphysate, ostiolate, 200-250 μm long neck, ostiolar canal 100-160 μm wide; pseudostroma sparse, forming a marginal, diffused, amorphous blackened zone containing 1-3 ascomata. Clypeus conspicuous, intra and subepidermal around the neck, to 80 μm thick, extending to connect marginal zones. Peridium 25-45 μm wide, of compressed, pale brown to brown cells, external cells deformed and crushed by the host tissues, the cell deformation and rupture especially prominent at the base of peridium. Paraphyses numerous, unbranched, 2-4 μm wide. Asci cylindrical, 290-340 × 14-18 μm, basal, unitunicate, 8-spored, rarely 4- or 6-spored, stipitate, stipe 30-40 μm long,with an amyloid, barrel-shaped apical ring 6-10 × 5-8 μm. Ascospores elliptical-fusiform, 40-60 × 10-12 μm, hyaline at first, dark brown when mature, pointed at ends, 1-celled, uniseriate, with 1-3 longitudinal germ slits, each slit one-third to half the length of ascospore, hyaline sheath conspicuous, 2-4 μm thick when mounted in lactophenol, to 10 μm when in water. | |||
| Specimens： |
Taiwan, Taitung Hsien, South Cross Road 143.5 K from west, 28 Dec. 1995, NCHUPP-2531. |
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| Habitat： |
null | |||
| Distribution： |
Taiwan. |
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| References： |
Francis, SM. 1975; Yip, HY. 1989. |
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| Provided： |
W. H. Hsieh |
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| Note： |
The barrel-shaped apical ring and the large ascospores are reminiscent of Rosellinia (Petrini, 1992). However this specimen is assigned to Anthostomella on the basis of the immersed and clypeate ascoma, which never occur in Rosellinia. The characteristic type of germ slit warrant the status of a new species. | |||