Peronospora paula Gustavsson, 1959

on Cerastium

Peronospora paula on Cerastium fontanum subsp. vulgare

Cerastium fontanum subsp. vulgare, Belgium, prov. Limburg, Genk, Diepenbekerbos © Carina Van Steenwinkel

Peronospora paula on Cerastium fontanum subsp. vulgare

infected leaves, upperside

Peronospora paula on Cerastium fontanum subsp. vulgare

hypophyllous down

Peronospora paula: conidiophore

conidiophore

Peronospora paula: conidiophore, detail

crown

Peronospora paula: conidia

conidia 12-14 x (15)-16-(17) µm

gall

upperside of the leaves with paled, slightly embossed patches; at the corresponding underside a greyish white fungal bloom, consisting of erect, distally strongly branched conidiophores. The conidia measure 12-18 x 15-20 µm.

host plants

Caryophyllaceae, narrowly monofaag

Cerastium fontanum subsp. vulgare, pumilum subsp. glutinosum, semidecandrum.

references

Belbahri, Calmin, Pawlowski & Lefort (2005a), Brandenburger (1985a: 99), Buhr (1964b), Chater, Woods, Stringer, ao (2020a), Doppelbaur & Doppelbaur (1974a), Doppelbaur, Huber & Poelt (1965a), Ellis & Ellis (1987a), Gustavsson (1991a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Müller & Kokeš (2008a), Tomasi (2014a), Voglmayr (2003a).