Solidago canadensis, Nieuwendam; the mycelium was sterile, and heavily parasitsed by Ampelomyces quisqualis.

gall

Golovinomyces asterum (Schweinitz) Braun, 2012: mycelium generally amphigenous. Appressoria nipple-shaped. Conidia formed in chains, without fibrosin bodies. Cleistothecia with 8-20 two-spored asci. Appendages sub-equatorial, mycelioid. Var. solidaginis: foot cell of the conidiophore mostly curved, sometimes sinuous; appendages of unequal length, up to 2.5 x the diameter.

host plants

Asteraceae, ? oligophagous

? Euthamia graminifolia; Solidago arguta, bicolor, californica, canadensis, chilensis, gigantea, glomerata, odora, rugosa, sempervirens, shortii, virgaurea & subsp. armena + minuta.

It is not sure whether it actually is this variety that parasitises Euthamia.

references

Beenken & Senn-Irlet (2016a), Braun & Cook (2012a), Bresinsky (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a, 2019a), Kruse & Jage (2014a), Leyen (2017a).