Taphrina fusca Giesenhagen, 1899

on Dryopteris

gall

up to 5 mm large, yellowish galls on the leaves, entirely consisting of epidermal tissue. Upperside with a layer of asci of 4-8 x 19-17 µm, standing on stalk cells of almost the same size.

host plants

Dryopteridaceae, monophagous

Dryopteris carthusiana, dilatata, “rigida var. australis”, villarii.

synonyms

Exoascus fuscus (Giesenhagen) Saccardo & Sydow, 1902.

references

Bataille (1936a), Brandenburger (1985a: 6), Buhr (1964b), Redfern & Shirley (2011a), Mix (1949a).