Quercus robur, Belgium, prov. Antwerp, Mechels Broek, de Potpolder, 29.vii.2016 © Carina Van Steenwinkel

underside

detail

sorus

sorus

beginning sorus

gall

the sori protrude through the stomata.

host plants

Fagaceae, oligophagous

Quercus cerris, petraea, robur.

references

Begorow, Bauer & Oberwinker (2001a), Begorow, Schäfer, Keller ao (2014a), Brandenburger (1985a: 63), Fodor & Ovidiu (2014a), Ing (1994a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2014a), Kruse (2014a, 2019a), Kruse, Thiel, Braun, ao (2018e), Scheuer & Bechter (2012a), Woods, Chater, Smith ao (2018a).