Taphrina athyrii Siemaszko, 1923
on Athyrium, Dryopteris
gall
up to 5 mm large, not thickened, yellow to brown spots on the leaf, bordered by a veinlet. At maturity a whitish bloom of asci develops at both sides.
hostplants
Dryopteridaceae, Woodsiaceae, narrowly polyphagous
Athyrium filix-femina; Dryopteris carthusiana, dilatata, filix-mas.
references
Brandenburger (1985a: 5), Buhr (1964b), Ellis & Ellis (1997a), Klenke & Scholler (2015a), Mix (1949), Tomasi (2014a).