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Pycnidia

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  • 2015-05-07 10:51:01, 1.51 M

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Pycnidia

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2Â¥2015-05-07 14:10:41
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Pycnidia

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Pycnidia subglobose, 50-200¦Ìm diam.,usually with a distinct straight or somewhat curved neck up to 80 ¦Ìm long, occasionally touching but not confluent.The outer elongated cells of the pycnidial wall are often characteristically inflated.aerial mycelium occasionally aberrant small non-ostiolate pycnidia occur. 5-23 ¦Ìm diam.Conidial matrix usually salmony in colour.
Conidia variable in shape and dimensions, mostly ovoid-ellipsoidal, sometimes curved,(4-)4.5-7(-8.5) x (1.5-)2-3(-3.5)¦Ìm, hyaline, or sometimes very pale brown.
Chlamydospores highly variable and irregular, uni- or multicellular, mostly intercalary, sometimes terminal-lateral, solitary or in chains, when septate usually dicyosporous,often with a botryoid configuration,smooth,verrucose or, rarely, tuberculate, subhyaline to brown,8-35¦Ìm diam., non-septate chlamydospores 5-15¦Ìm diam.
Colonies on OA rather fast growing at room temperature, 5-7cm diam.after 7 days,at 30¡æ even fast growing;on MA also fast growing at room temperature, 5-8cm diam. Aerial mycelium fluffy, sometimes compact with greyish green or whitish/salmon pink tinges and occasionally reddish exudate droplets;reverse often with reddish discoloration and occasionally needle-like strains showed a positive reaction with the sodium hydroxide test: on application of a drop of NaOH green ¡úred(E+ reaction).
3Â¥2015-05-07 14:12:52
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