Phylum:Ascomycota >> Class: Dothideomycetes >> Order: Dothideomycetes | ||||
BCRC Number: | NO BCRC Number! | |||
Scientific Name: | Pseudocercospora hydrangeae-angustipetalae | |||
Author: | Basionym: Cercospora hydrangeana Tharp sensu Yamamoto, Trans. nat. Hist. Soc. Formosa 26:281, 1936.. Pseudocercospora hydrangeae-angustipetalae Goh & Hsieh. Trans. mycol. Soc. R.O.C. 4(2):39-56, 1989. |
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Description: | Leaf spots amphigenous, angular to irregular, vein-limited, dark brown at first, then grayish in the center, with a dark margin, 3-14 × 2-6 mm, often confluent. Fruiting amphigenous. Stromata lacking or up to 50 μm wide, subimmersed, globular, dark brown. Conidiophores 3-12 in a fascicle, slightly curved or undulate, pale olivaceous brown, paler towards the apex, uniform in width, multiseptate, not branched, rarely geniculate, conically truncate at the apex, 50-200 × 3.5-4.5 μm; conidial scars unthickened. Conidia subhyaline to very pale olivaceous, cylindric or obclavato-cylindric, straight or slightly curved, 2-12 septate, subobtuse or rounded at the apex, subtruncate to obconically truncate at the base, 30-125 × 3-4.5 μm; hilum unthickened. | |||
Specimens: | Taiwan, Taipei, 20 Nov. 1933, holotype in Herb. NTU-PPE, labelled as Cercospora hydrangeana Tharp. |
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Habitat: | On leaves of Hydrangea angustipetala Hayata (‘angllstisepala’) | |||
Distribution: | Taiwan. |
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References: | Hsieh, WH and Goh, TK. 1990. |
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Provided: | W. H. Hsieh |
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Note: | Cercospora hydrangeana Tharp (Mycologia 9:110, 1917) differs from this fungus by its thickened conidial scars. Cercospora obtegens H. & P. Sydow (Ann. mycol. 7:171, 1909) differs from this fungus by its hypophyllous effuse fruiting, nonfasciculate conidiophores and dark-coloured conidia. | |||