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

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

 Description: Leaf spots angular to irregular, vein-limited, purplish brown, without definite margin, 1-2.5 mm in width. Fruiting hypophyllous. Stromata totally absent. Secondary mycelium ex-ternal: hyphae emerging through the stomata, repent, bearing lateral conidiophores, very pale olivaceous, septate, 1-2 μm in width. Conidiophores unfasciculate but arising from the external secondary mycelial hyphae, sometimes only mere short projections on the external hyphae, very pale olivaceous, rarely septate, 0-3 geniculate, subtruncate or rounded at the apex, 3-25 × 1.5-3 μm; conidial scars inconspicuous. Conidia narrowly obclavate, substraight to curved, sometimes undulate, subhyaline or very pale olivaceous, indistinctly septate, smooth, subacute at the apex, subobconic or obconically truncate at the base, 20-90 × 1.5-2 μm; hilum unthickened, about 0.5-1 μm wide.

Taiwan, Taichung, NCHU Campus, 10 June, 1986, holotype, NCHUPP-219 (isotype in IMI Herbarium No: 312081).

 Habitat: On leaves of Vigna radiata (L.) R. Wilczek (Phaseolus radiatus var. typicus) Prain.





W. H. Hsieh

 Note: This fungus differs from other Pseudocercospora on Phaseolus spp. by its unfasciculate conidiophores which borne on external hyphae and by its slender, narrowly obdavate conidia.