Peronospora lotorum Sydow, 1923

on Lotus

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

hypophyllous down

conidiopore with two spores

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.

swelling at the stem

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).