Volkartia rhaetica (Volkart) Maire, 1907
on Crepis
gall
extensive, flat, initially dark green, finally more yellowish brown blister-like swelling of the leaf. When the fungus is mature the surface is covered by a greyish-white bloom of asci.
host plants
Asteraceae, monophagous
Crepis conyzifolia, mollis, pygmaea, pyrenaica.
synonyms
Taphrina rhaetica Volkart, 1903.
references
Bataille (1936a), Buhr (1964b), Klenke & Scholler (2015a), Reddy & Kramer (1975a).