Achillea millefolium, Belgium, prov.Antwerp, Balen, Griesbroek © Carina Van Steenwinkel

gall

No host plant alternation; only telia. Telia mostly hypohyllous, on yellowed spots, dark brown, long covered by the epidermis. Spores two-celled, on a short, hyaline, persistent pedicel.

host plants

Asteraceae, narrowly monophagous

Achillea clavennae, collina, crithmifolia, millefolium, nobilis, pratensis, seidlii, setacea.

synonyms

several authors, including Termorshuizen & Swertz and Vanderweyen & Fraiture, and also the Index Fungorum (2016) consider this species conspecific with P. cnici-oleracei.

references

Brandenburger (1972a, 1985a: 630), Buhr (1964b), Doppelbaur & Doppelbaur (1973a), Ellis & Ellis (1997a), Gaumann (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Melzer, Pittoni, Poelt & Scheuer (1984a), Preece & Hick (1994a, Redfern & Shirley (2011a), Scheuer & Bechter (2012a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2011a), Wilson & Henderson (1966a).