Pestalotiopsis theae . [Descriptions of Fungi and Bacteria

Abstract

Abstract A description is provided for Pestalotiopsis theae . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Camellia sinensis ; also recorded on Cocos, Diospyros, Elaeis, Gossypium, Mangifera, Syzgium, Theobroma and a number of other unrelated hosts. DISEASE: Grey blight of tea, which begins as small brown spots on the leaves, later enlarging to 1 cm diam. or more and showing (on the upper surface) a greyish centre with light to dark brown margins. Lesions are usually circular or oval with concentric zonations marked out on the upper surface by the dark acervuli. On young leaves these zonations are often absent. Coalescence of the spots may occur. GEOGRAPHICAL DISTRIBUTION: Australia, Azores, Brazil, Burma, Ceylon, China, Canary Island, Ethiopia, Formosa, Ghana, Guinea, Hawaii, Hong Kong, India, Indonesia, Iran, Japan, Kenya, Laos, Malagasy Republic, Malawi, Malaysia, Mozambique, Nepal, Papua New Guinea, Peru, Rhodesia, Sierra Leone, Somaliland, S. Africa, Tanzania, Thailand, Turkey, Uganda, USSR, Vietnam (S.). TRANSMISSION: No detailed studies reported; the spores may be soil-borne (40: 184).