Cryphonectria (genus)

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Cryphonectria parasitica - A-B) herbarium specimen, C-E) ascomata, F-I) asci, J-M) ascospores, N-O) conidiomata, P-R) conidiogenous cells and conidia - scale bars: C-D = 1 mm; F–I, P–R = 10 mm; E,Q,O = 100 mm; N = 200 mm; J–M = 5 mm (click on image to enlarge it)
Author(s): I.C. Senanayake, P.W. Crous, J.Z. Groenewald, S.S.N. Maharachchikumbura, R. Jeewon6, A.J.L. Phillips, J.D. Bhat, R.H. Perera, Q.R. Li, W.J. Li, N. Tangthirasunun, C. Norphanphoun, S.C. Karunarathna, E. Camporesi, I.S. Manawasighe, A.M. Al-Sadi and K.D. Hyde
Source: Studies in Mycology (2017), vol. 86, p. 240

Cryphonectria (Sacc.) Sacc. & D. Sacc. 1905

This a a small genus of fungi, originally thought to be similar to the genus Nectria. Economically the most important species is Cryphonectria parasitica which causes chestnut blight by infecting the bark and the cambium of the trunk. Most other species of Cryphonectria are saprobic or it is unknown if they are pathogenic. Among the characteristics of this genus are the small conidia (2-5 µm), mostly of uniform size.

Type species: Cryphonectria parasitica


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