Phylum:Ascomycota >> Class: Dothideomycetes >>  Order: Dothideomycetes 
   
 
 BCRC Number NO BCRC Number!  
   
 Scientific Name: Pseudocercospora rhamnaceicola
 
   
   
 Author:

Pseudocercospora rhamnaceicola Goh & Hsieh. Cercospora and similar fungi from Taiwan. Maw Chang Book Company, Taipei, Taiwan, 1990.

   
 
 
 
 
 Description: Leaf spots variable, generally orbicular, suborbicular, or irregular, 1-5 mm wide, grayish brown to grey, sometimes surrounded by a yellow halo. Fruiting amphigenous, more abundant on the lower surface. Hypophyllous external mycelium bearing secondary conidiophores sometimes present. Stromata dark brown, globular, crumpent, 25-50 11m wide. Conidiophores densely fasciculate, delicate, cylindric, subhyaline to very pale brown, 0-2 septate, not constricted, geniculation and branching not evident, 15-35 × 2-3 μm, conidial scars unthickened and inconspicuous. Conidia subhyaline or very pale olivaceous, narrowly obclavate, rarely acicular, straight to mildly curved, indistinctly multiseptate, acute at the apex, obconic or obconically truncate at the base, 18-85 × 1.5-2.5 μm; hilum unthickened.
 
 
 
 
 
 Specimens:

Taiwan, Taichung, NCHU Campus, 17 Aug.1984, NCHUPP-64, on Zizphus vulgaris Lam. var. pinosus Bunge. Taipei, 26 Oct. 1919, holotype in Herb. NTU-PPE, on Paliurus ramosissimu. Taipei, 18 Feb. 1934, Herb. NTU-PPE , on Rhamnus nepalensis, labelled as Cercospora aeruginosa Cooke.

 
 
 
 Habitat: On leaves of Paliurus ramosissimus (Lour.) Poir., Rhamiius nepalensis M. Laws. and Zizyphus vulgaris Lam. var. pinosus Bunge.
 
 
 
 Distribution:

Taiwan.

 
 
 
 References:

Sawada, K. 1942a. Yamamoto, W. 1936.

   
   
   
 Provided:

W. H. Hsieh

 
 
 Note: This fungus resembles Cercospora zizyphi Petch (Ann. Roy. Bot. Gard. Peradeniya, Part 5, 4:306, 1909) but differs by having chiefly hypophyllous fruiting and relatively narrower conidia. Two other species namely Cercospora aeruginosa Cooke (Hedwigia 17:39, 1878) and C. bacilligera (Berk. & Br.) Fres. (Beitr. Zur. Mycol. Drittes Heft p. 91, 1863) also similar in morphology and perhaps further inoculation tests or other taxonomic attempts should be made later to confirm their identities.