Peronospora ornithopi Gäumann, 1923

on Ornithopus

Peronospora ornithopi on Ornithopus perpusillus

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

Peronospora ornithopi on Ornithopus perpusillus

infected leaflets turn yellow

Peronospora ornithopi on Ornithopus perpusillus

the down is very thin

Peronospora ornithopi: conidiophores

two conidiophores

Peronospora ornithopi: conidiophore

ultimate branchings

Peronospora ornithopi: conidium

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), Buhr (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), Negrean (1995a).

mod 11.vi.2019