Phylum:Ascomycota >> Class: Dothideomycetes >>  Order: Dothideomycetes 
 BCRC Number NO BCRC Number!  
 Scientific Name: Passalora clerodendri

= Mycovellosiella clerodendri Goh & Hsieh. Trans. mycol. Soc. R.O.C. 4(2):l-23 1989.

Passalora clerodendri (Goh & W.H. Hsieh) U. Braun & Crous, Mycosphaerella and its anamorphs: 1. Names published in Cercospora and Passalora: 128. 2003.

 Description: Leaf spots angular to irregular, vein-limited, 2-7 mm wide, often confluent, yellowish brown to dark reddish brown, sometimes with a grayish center. Fruiting strictly hypophyllous, effuse, invisible or grayish. Stromata absent or just a few brown cells in the substomatal cavity. Secondary mycelium well developed, external: hyphae pale olivaceous, emerging through astoma in loose fascicle, 20-250 μm or more in length, 2-4 μm wide, repent or arcuate, oftentwisted together and climbing up the leaf hairs, closely septate, constricted at the septa, notverruculose, bearing short conidiophores terminally and laterally. Conidiophores arising lateral-ly and terminally from the loose fascicle of external hyphae which penetrate a stoma, pale oli-vaceous to very pale brown, 2-10 × 2-5 μm, conidial scars thickened conspicuously. Conidia olivaceous, cylindric to narrowly cylindro-obclavate or filiform, straight to mildly curved,not septate to distinctly 1-16 septate, often constricted at the septa, catenulate, subobtuse torounded at the apex, rounded or obconic at the base with a conspicuously thickened hilum, 10-160 × 2.5-4 μm.

Taiwan, Hsinchu, 8 Nov. 1928, holotype in Herb NTU-PPE, on Clerodendrum cyrtophyllumTurcz.8,1928, Hsinchu; also Taipei, 19 Oct. 1919. Nantou Hsieh, Yuchih, 24 Aug. 1984, NCHUPP-95. On Clerodendrum cyrtophyllum Turcz.

 Habitat: On leaves of Clerodendrum spp.

Common on Clerodendrum spp.


Sawada, K. 1942.


W. H. Hsieh

 Note: Pseudocercospora clerodendri (Miyake) Deighton (1976) differs from this fungus by its epiphyllous fruiting, fasciculate conidiophores obdavate, uncatenulate conidia, and by its mithickened conidia scars.