Diplocarpon rosae Wolf, 1912
on Rosa
Rosa spec., Belgium, prov. Limbourg, Heusden-Zolder, Terril Lindeman, 29.vii.2017 © Carina Van Steenwinkel
a single leaf
conidia
conidia
Rosa spec., Nieuwendam
same leaf, underside
conidia
gall
brownish black epiphyllous leaf spots. Under damp conditions masses of conidia are squeezed out of upperside acervuli. Well-known disease of ornamental roses: “black spot disease.”
hostplants
Rosaceae, monophagous
Rosa canina, pendulina, villosa.
synonyms
Marssonina rosae (Libert) Diedicke, 1915.
references
Blumer (1946a), Ellis & Ellis (1997a), Kozłowska, Mułenko & Heluta (2015a), Ludwig (1974a), Moret i Benaset & Nadal i Puigdefabregas (1984a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a).
mod 27.viii.2018