 Phylum：Ascomycota >> Class： Ascomycetes >> Order： Xylariales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Iodosphaeria polygoni | |||
| Author： |
Iodosphaeria polygoni W. H. Hsieh et al., Mycol. Res. 1012: 841-842. 1997. |
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| Description： |
Ascomata 270-475 μm wide, 250-500 μm high, superficial, brown, subglobose, single to sometimes aggregated, associated with repent, spreading network of brown hyphae; ostiole apical, nonpapillate with a flattened apex. Peridium 50-80 μm wide, composed of two distinct layers: the outer layer of brown pseudoparenchymatous cells forming a textura angularis; inner layer comprising hyaline, more or less flattened, elongated pseudoparenchymatous cells. Periphyses up to 5 μm wide, hyaline, aseptate, distinct from paraphyses. Setae numerous, hyphal, flexuous, brown, septate, unbranched, single to fasciculate, 180-280 μm long and up to 8 μm wide formed from the outer cells of the peridium. Paraphyses 3-6 μm wide, hyaline, filamentous, slightly tapering towards the apex, deliquescing and disappearing when asci mature. Asci 150-180 × 10-13 μm, cylindrical, unitunicate, thin-walled, 8-spored, short-stalked, with an amyloid apical ring. Ascospores 18-23 × 5.5-8.o μm, uniseriate inside the ascus, ellipsoidal, hyaline, aseptate, guttulate. A. Ceratosporium anamorph is associated with the teleomrph. Conidia arising directly from brown, repent hyphae, triradiately branched, brown, 9-14-septate with each arm measuring 100-140 μm long and 17-20 μm wide at the base, mostly longer than those reported for I. phyllophila (Mouton) Samels, E. Müll. & Petrini and I. ripogoni Samuels, E. Müll. & Petrini (1987). | |||
| Specimens： |
Taiwan, Taichung Hsien, Anmashan, 2 Nov. 1995, IMI 371158. |
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| Habitat： |
On twigs of Polygoni Chinense L. | |||
| Distribution： |
Taiwan. |
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| References： |
Hyde, KD. 1995; Samuels, G.J et al. 1987. |
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| Provided： |
W. H. Hsieh |
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| Note： |
null | |||