Phylum:Ascomycota >> Class: Ascomycetes >> Order: Pleosporales | ||||
BCRC Number: | NO BCRC Number! | |||
Scientific Name: | Astrosphaeriella africana | |||
Author: | Astrosphaeriella africana D. Hawksw. in D. Hawksw. and Boise, Sydowia 38: 116. 1985. |
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Description: | Ascomata scattered, immersed, raising the overlying host tissue, hemispherical, 700-800 μm wide, 300-360 μm high, apex papillate, usually elongated to become a neck, flattened at base. Peridium laterally merging with the host tissue to form a shield-like clypeus, much reduced at base, exhibiting a palisade-like arrangement of cells at the rim margin. Asci clavate, 110-130 × 12-14 μm, long stalked, stalk up to 40 μm long, 8-spored. Pseudoparaphyses embedded in gelatinous matrix, frequently branched and anastomosing, 1-1.5 μm wide. Ascospores fusiform, 40-54 × 5-7 μm, acute or occasionally swollen at ends, brown, striate, 1-septate, septum usually slightly constricted, median or supra-median, broadest on the upper cell near the septum, occasionally becoming 3-septate, overlapping bi-triseriate in upper part of ascus and uniseriate below. | |||
Specimens: | Taichung Hsien, Kukuan, on indet. bamboo, 5 Apr. 2001, C.Y. Chen (NCHUPP c0105); Paileng, on Bambusa oldhamii, 19 Aug. 2001, C.Y. Chen (NCHUPP c0215) |
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Habitat: | On bamboo. | |||
Distribution: | Australia, Brunei, Malaysia, Philippines, Taiwan, Tanzania. |
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References: | Chen, CY and Hsieh, WH. 2004a; Hyde, KD and Fr?hlich, J. 1997. |
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Provided: | C. Y. Chen |
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Note: | A. africana, with immersed hemispherical clypeate ascomata, can readily be recognized by the protruded necks on surface view. | |||