Colletotrichum nymphaeae

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Colletotrichum nymphaeae - A–B) conidiomata, C–G) conidiophores, H–M) appressoria, N–O) conidia, scale bars: A = 100 μm, C = 10 μm, scale bar of A applies to A–B, scale bar of C applies to C–O (click on image to enlarge it)
Author(s): U. Damm, P.F. Cannon, J.H.C. Woudenberg and P.W. Crous
Source: Studies in Mycology, 2012, 73, p. 81

Colletotrichum nymphaeae (Pass.) Aa 1978

This fungus is widely distributed and causes leaf spot, anthracnose and bitter rot diseases. The hosts are plants from the families Nymphaeaceae, Rosaceae, Proteaceae and others. For example crops like apple, strawberries, pepper and olive (olive anthracnose) may become infected.

C. nymphaeae is part of the Colletotrichum acutatum species complex (Damm et al. 2012). Condia have a size of approximately 15-20 x 5 µm. They are hyaline, smooth-walled, aseptate, straight, cylindrical to cylindric-clavate, with one end round and one end slightly acute or both ends round.