Phylum:Ascomycota >> Class: Dothideomycetes >>  Order: Dothideomycetes 
 BCRC Number NO BCRC Number!  
 Scientific Name: Pseudocercospora cassiae-fistulae

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

 Description: Leaf spots distinct on the lower surface, angular, vein limited, grayish brown to dark, appearing as slightly raised irregular dark spots on the corresponding upper surface, 0.5-2 mm wide or confluent to form larger spots. Fruiting strictly hypophyllous. Stromata well developed, subimmersed, olivaceous brown, mostly elongated, up to 45 μm wide. Secondary mycelium external: hyphae from the base of the fasciculate conidiophores, septate, branched, repent, bearing secondary conidiophores as side branches, pale olivaceous to very pale olivaceous brown, 1.5-4 μm wide. Conidiophores chiefly fasciculate, dense, pale olivaceous to very pale olivaceous brown, sometimes almost colourless at the apex, straight or 1-2 abruptly geniculate, not branched, 0-2 septate, attenuated, rounded or subtruncate at the apex, 10-30 × 2.5-5 μm; conidial scars unthickened. Conidia obclavate or cylindro-obclavate, concolorous with the conidiophores, mostly straight, 2-8 plainly septate, subobtuse or narrowly rounded at the apex, obconically truncate at the base, 25-65 × 3-4 μm.

Taiwan, Yunlin Hsien, Touliu, 15 March, 1985, holotype, NCHUPP-83

 Habitat: On leaves of Cassia fistula L.





W. H. Hsieh

 Note: This fungus differs from other Pseudocercospora on Cassia spp. by its strictly hypophyllous fruiting and the simultaneous presence of the external hyphae and the densely fasciculate conidiophores on a well developed stroma.