Pestalotiopsis malicola

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Pestalotiopsis malicola (Hori) X. A. Sun & Q. X. Ge (1990)

Basionym: Pestalotiopsis malicola Hori 1928


Description modified after Guba[1]: Dead areas in leaves along margins, irregular in shape and size, at first brown, lager ash-gray, the surface dotted and roughened with numerous black pustules. Conidia 5-celled, clavate-fusiform, erect, unequilateral, slightly or more or less constricted at septa, 18.5-23 (-25) x 7-9.5 µm. Median 3 colored cells together 13-16 µm long, the upper two umber to fuliginous, the walls dark, rarely opaque, the middle cell often the darkest, the two together cask-shaped, lowest colored cell pale brown, clear; apical hyaline cells short and broad, conic-cylindric with a crest of 3 divergent, coarse appendages ("setulae" in Guba), 9-21 (-26) µm long; basal hyaline cells conic to hemispherical, sometimes acute; basal appendage ("pedicel" in Guba) short, up to 5 µm.


  • Light and electron microscopical images, including germination in Gevens et al.[2]


  1. Guba E. F. 1961. Monograph of Monochaetia and Pestalotia. Cambridge, MA: Harvard University Press (Page 212-213.)
  2. Gevens, A. J., Carver, T. L. W., Thomas, B. J. & Nicholson, R. L. 2001. Visualization and partial characterization of the ECM of Pestalotia malicola on artificial and natural substrata. Physiological and Molecular Plant Pathology 58 (6): 277-285. ([1])