Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Cocconia placenta

Cocconia placenta (Berk. et Br.), Sacc. Syll. Fung. 8: 738. 1889.

Basionym: Rhytisma placenta Br., J. Linn. Soc. Lond. Bot. 14: 131. 1875.

 Description: Leaf spots none. Hyphae with dark brown color penetrating the plant tissue intracellularly, protruding from the epidermis and cuticle, then forming a superficial, flat crust-like, roundish, brown-black, 0.5-1 mm in diam. Locules single, suboblate, often not in circle, 211-725 μm wide, 126-157 μm high, covered with a layer of clypeus, black, carbonaceous, 47-55 μm thick. Asci clavate or broadly clavate, bitunicate, rounded and thickened at the apex, apical nasse prominent, short-stalked, 4-spored, 80-100 × 24-40 μm, with pseudoparaphyses. Ascospores ellipsoid, thick-walled, 2-celled, with a middle septum, distinctly constricted, pale olivaceous when immaturity, dark brown when maturity, 30-45 × 17-21.

Taiwan, Chiayi County, Alishan, 8 July 1989, NCHUPP-2055.

 Habitat: On living leaves of Symplocos glauca (Thunb.) Koidz.

Sri Lanka, Taiwan.


Li, Li-Tzu. 1990.


W. H. Hsieh

 Note: null