Peronospora arenariae (Berkeley) Tulasne, 1954
on Moehringia

Moehringia trinervia, Belgium, prov. Limburg, Heusden-Zolder © Carina Van Steenwinkel

detail

hypophyllous down

conidiophre and stomata

conidiophore

conidia
gall
development of the plant systemically disturbed; upperside of the leaf with yellow spots. Underside there with a greyish purple down of 0.4 mm high erect conidiophores that apically several times are dichotomously branching, each branch bearing an ovoid conidium.
host plants
Caryophyllaceae, monophagous
Moehringia ciliata, trinervia.
references
Belbahri, Calmin, Pawlowski & Lefort (2005a), Blumer (1946a), Brandenburger (1985a: 101), Buhr (1964b), Doppelbaur, Huber & Poelt (1965a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1959a, 1991a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2019a), Müller & Kokeš (2008a), Negrean (1996b), Ruszkiewicz-Michalska & Michalski (2005a), Săvulescu (1948a), Scheuer & Bechter (2012a), Thines, Telle, Ploch & Runge (2009b), Voglmayr (2003a).