Peronospora ornithopi Gäumann, 1923

on Ornithopus

Ornithopus perpusillus, Belgium, prov. Limbuorg, Beverlo, Einderse Beemden, 16.iv.2021 © Carina Van Steenwinkel: infected plant

conidiophore

Ornithopus perpusillus, Belgium, prov. Antwerp, Olen, Olen’s Broek, 9.vi.2019 © Carina Van Steenwinkel

infected leaflets turn yellow

the down is very thin

two conidiophores

ultimate branchings

conidium

gall

development of the plant disturbed; upperside of the leaf with yellow spots. Underside there with a brownish purple down of 0.8 mm high erect conidiophores that apically several times are dichotomously branching, each branch ending in an conidium.

host plants

Fabaceae, monophagous

Ornithopus perpusillus, pinnatus, sativus.

references

Brandenburger (1985a> 308), Buhr (1965a), Chater, Woods, Stringer, ao (2020a), 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), Negrean (1995a).