Plant Parasites of Europe

leafminers, galls and fungi

Peronospora trifolii-hybridi

Peronospora trifolii-hybridi Gäumann, 1923

on Trifolium

Peronospora trifolii-hybridi on Trifolium pratense

Trifolium pratense, Belgium, prov. Limburg, Koersel © Carina Van Steenwinkel

Peronospora trifolii-hybridi on Trifolium pratense

hypophyllous down

Peronospora trifolii-hybridi: conidiophore


Peronospora trifolii-hybridi: conidiophore


Peronospora trifolii-hybridi: conidiophore

conidiophore, base


underside of the leaves with a greyish fungal down of erect conidiophores that apically several times are dichotomously branching, each branch ending upon a conidium. Embedded in the host tissue lie brown, thick-walled, smooth oospores

host plants

Fabaceae, narroly monophagous

Trifolium hybridum, pratense, scabrum, striatum.


Peronospora trifolii-pratensis Gustavsson, 1959; P. pratensis Gäumann, 1923.

However, DNA-work by García-Blázquez cleary ao shows two groups, one for P. trifoilii-hybridi on Trifolium hybridum, a second one for P. trifolii-pratensis on T. pratense.

the Index Fungorum (2016) considers P. trifolii-hybridi a mere junior synonym of P. trifoliorum.


Blumer (1946a), Brandenburger (1985a), Chater, Woods, Stringer, ao (2020a), Doppelbaur & Doppelbaur (1973a), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Göker, Voglmayr ao (2008a), Göker, García-Blázquez, Voglmayr ao (2009a), Jage, Klenke, Kruse ao (2016a, 2017a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Kummer (2012a), Müller & Kokeš (2008a), Negrean (1996b), Riethmüller, Voglmayr, Göker ao (2002a), Săvulescu (1948a), Voglmayr (2003a).

Last modified 6.x.2021