Peronospora alsinearum Caspary, 1855

on Stellaria

Peronospora alsinearum on Stellaria media

Stellaria media, Belgium, prov. Antwerp, Westerlo, Rothoek, 4.iv.201i9 © Carina Van Steenwinkel

Peronospora alsinearum on Stellaria media

leaf with down

Peronospora alsinearum: conidiophores

conidiopores

Peronospora alsinearum: conidia

conidia

Peronospora alsinearum: conidium

conidium

Peronospora alsinearum on Stellaria media

Stellaria media, Hungary, Budapest, 16.iii.2019 © László Érsek

Peronospora alsinearum on Stellaria media

diseased plant

Peronospora alsinearum on Stellaria media

detail

Peronospora alsinearum on Stellaria media

down

Peronospora alsinearum on Stellaria media

maximally enlarged

gall

leaves pale, may be disfigured. Underside with a yellowish to brownish purple down, consisting of 0.5 mm high erect conidiophores that apically several times are dichotomously branching, each branch ending upon a conidium.

host plants

Caryophyllaceae, narrowly monophagous

Stellaria media, neglecta, nemorum, pallida.

synonyms

Peronospora media Gäumann, 1920.

references

Belbahri, Calmin, Pawlowski & Lefort (2005a), Blumer (1946a), Brandenburger (1985a: 102), Buhr (1965a), Cunnington (2008a), Dauphin & Aniotsbehere (1997a), Doppelbaur & Doppelbaur (1973a), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Lee, Shin, Lee & Choi (2017a), Müller (2015a), Negrean, Constantinescu & Denchev (2004a), Redfern & Shirley (2011a), Riethmüller, Voglmayr, Göker ao (2002a), Săvulescu (1948a), Thines, Telle, Ploch & Runge (2009b), Voglmayr (2003a).

mod 1.ix.2019