Blumeriella jaapii (Rehm) Arx, 1961

cherry leaf spot

on Prunus

Blumeriella jaapii: leaf spots on Prunus avium

Prunus avium, Belgium, prov. Antwerp, Mol, 23.vi.2018 © Carina Van Steenwinkel

Blumeriella jaapii: leaf spots on Prunus avium

same leaf, underside

Blumeriella jaapii: leaf spots on Prunus avium

leaf spots, upper side

Blumeriella jaapii: extrusion of conidia

leaf spots, underside

Blumeriella jaapii: extrusion of conidia

extruded conidia masses

Blumeriella jaapii: conidia

conidia

Blumeriella jaapii: conidia

conidium

parasite

Pycnidia in a hypophyllous stroma. Conidia 2-3 x 48-62 µm, 0-1-septate, obtuse at the base, usually somewhat tapering at the tip. In the winter apothecia develop on the fallen leaves.

host plants

Rosaceae, monophagous

Prunus avium, padi, serotina.

synonyms

Cylindrosporium padi Karsten, 1884; Phloeosporella padi (Libert) Arx.1961.

references

Grove (1937a), Jage, Kruse, Kummer ao (2013a), Kozłowska, Mułenko & Heluta (2015a), Melgarejo Nárdiz, García-Jiménez, Jordá Gutiérrez ao (2010a).

mod 27.vi.2018