Peronospora lotorum Sydow, 1923

on Lotus

Peronospora lotorum on Lotus spec.

Lotus spec., Belgium, prov. Limburg, Hasselt, Domein Kiewit © Carina Van Steenwinkel

Peronospora lotorum on Lotus spec.

hypophyllous down

Peronospora lotorum on Lotus spec.: conidiophore

conidiopore with two spores

Peronospora lotorum on Lotus spec.: conidiophore

terminal branchings

gall

underside with a greyish-brown fungal down, consisting of 0.6 mm high erect conidiophores that apically several times are dichotomously branching, each terminal branch ending in am ovoid conidium.

host plants

Fabaceae, monophagous

Lotus alpinus, corniculatus, pedunculatus.

Hyperparasitation

Sometimes the stem showed a strong swelling; also, within the stem sometimes a hypha seemed to be there. Probably this indicates hyperparasitation, perhaps by Cladospororium uredinicola, which is known also to parasitise on downy mildews.

Peronospora lotorum on Lotus spec.

swelling at the stem

Peronospora lotorum on Lotus spec.

parasitation ?

references

Blumer (1946a), Brandenburger (1985a: 298), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), García-Blázquez, Göker Voglmayr, Martín ao (2008a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2014a), Kruse, Thiel, Frauenberger ao (2019a), Müller & Kokeš (2008a), Săvulescu (1948a), Voglmayr (2003a).