Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Colletotrichum acutatum causes anthracnose of black gum (Nyssa sylvatica).

Abstract

Necrotic leaf spots, stem lesions and branch dieback on N. sylvatica were first observed in the southern Appalachians, USA, in 1989. Isolations repeated over several years consistently yielded C. acutatum. Pathogenicity was confirmed and the fungus was reisolated. Botryosphaeria spp. and a Phomopsis sp. were also occasionally isolated. It is concluded that C. acutatum is the main cause of black gum anthracnose.