Phylum:Ascomycota >> Class: Dothideomycetes >> Order: Dothideomycetes | ||||
BCRC Number: | NO BCRC Number! | |||
Scientific Name: | Pseudocercospora subsessilis | |||
Author: | Basionym: Cercospora subsessilis Sydow, Annls mycol. 11:329, 1913. Pseudocercospora subsessilis (Sydow) Deighton. Mycol. Pap. 140:154 1976. |
|||
Description: | Leaf spots circular to angular, 2-5 mm wide, sometimes zonate, tan, grey or pale brown, each zone being bounded by a dark brown line, on dried specimen appearing grayish to whitish and punctiform in the center, with a narrow dark margin. Fruiting amphigenous, punctiform. Secondary mycelium absent. Stromata globular, dark brown, 30-65 μm wide. Conidiophores very densely fasciculate, compact, subhyaline to pale olivaceous brown, 0-2 septate, not constricted, not branched, straight to slightly geniculate, conically truncate to rounded at the apex, 10-40 × 2-4 μm; conidial scars unthickened. Conidia subhyaline to faintly olivaceous, cylindric or cylindro-obclavate, straight to mildly curved, 3-10 septate, subobtuse to rounded at the apex, obconically truncate at the base, 25-90 × 2-4 μm; hilum unthickened. | |||
Specimens: | Taiwan, Kaoshiung Hsien, Chihshan, 2 Feb. 1985, NCHUPP-157. Tainan Hsien, Nansi, 10 May, 1931, Herb. NTU-PPE, labelled as Cercospora leucosticta Ell. & Ev. |
|||
Habitat: | On leaves of Melia azedarach L. | |||
Distribution: | Burma, Cuba, Hong Kong, India, Jamaica, Japan, Mainland China, Nepal, Palestine, Philippines, San Domingo, Sierra Leone, Sri Langka, Sudan, Taiwan, U.S.A., Venezuela. |
|||
References: | Hsieh, WH and Goh, TK. 1990. Sawada, K. 1931. |
|||
Provided: | W. H. Hsieh |
|||
Note: | Cercospora meliae Ellis & Everhart (Jour. Mycol. 3: 16. 1887; syn. C. leucosticta Ell. & Ev., Jour. Mycol. 4:53. 1888) differs from this fungus by its hyaline acicular conidia. Both the original specimens of Sawada deposited in Herb. NTU-PPE labelled as Cercospora leucosticta Ell. & Ev. and his original literature (1931) show whitish orbicular punctiform leaf spots, but the conidia are cylindric to cylindro-obclavate in shape (i.e. identical with that of Pseudocercospora subsessilis). | |||