 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Phyllachorales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Phyllachora schimae | |||
| Author： |
Phyllachora schimae C.Y. Chen & W.H. Hsieh, Bot. Bull. Acad. Sin. 37: 219. 1996. |
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| Description： |
Leaf spots 1-2 mm wide, mostly rounded, solitary or sometimes coalescing, discolouring the host tissue to yellow brown. Stromata up to 1 mm wide, roughly circular, black, shiny, dome-shaped tar spots scattered within the leaf spot, visible on both sides but more prominent on the upper surface. Ascomata 280-380 µm high, 240-360 µm wide, subglobose, immersed in the host mesophyll with a small conical apex forming a periphysate neck, solitary or gregarious. Clypeus black brown amorphous layer 80-120 µm wide and 360-400 µm long composed of melanized host palisade and epidermal cells and fungal hyphae beneath the cuticle. Peridium 8-16 µm, composed of several layers of thin-walled, hyaline to pale brown, elongated, compressed cells. Asci 65-110 × 12-13 µm, cylindrical, pedicellate, unitunicate, 8-spored. Ascospores 16-20 × 7-9 µm, hyaline, smooth, guttulate, aseptate, ovoid, uniseriate to overlapping biseriate inside the ascus. | |||
| Specimens： |
Taiwan, Taoyuan Hsien, Lalashan, 20 Oct. 1994, holotype NCHUPP-2319 . |
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| Habitat： |
Parasitic on Schima superba. | |||
| Distribution： |
Taiwan |
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| References： |
Chen, CY. and Hsieh, WH. 1996. |
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| Provided： |
W. H. Hsieh |
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| Note： |
Four species of Phyllachora have been reported on the genera of Theaceae (Arx and Müller, 1954; Hosagoudar, 1985; Kamat et al., 1987). These are P. cymbispora T. S. & K. Ramkr., P. euryae (Rac.) Arx & Müller, P. transiens Syd. & Butl. And P. gordoniae Hos. The first three species occur on Eurya and the last species on Gordonia. Phyllachora schimae is distinguished from them by size and shape of ascospores and asci. No Phyllachora have been reported on Schima, and Phyllachora species are based on host, so this fungus is described as a new species. | |||