Physoderma trifolii (Passerini) Karling, 1950
on Trifolium
gall
0.5-1 mm large, hyaline pustules in numbers on the leaves and on the disfigured petioles and stems.
host plants
Fabaceae, monophagous
Trifolium hybridum, incarnatum, montanum, pratense, repens, resupinatum, subterraneum.
synonyms
Both Brandenburger and Klenke & Scholler discuss, as two separate species: Physoderma trifolii (Passerini) en Olpidium trifolii Schröter. However, the Index Fungorum (2015) treats Olpidium trifolii (Passerini) Schröter, 1886as an invalid synonym of Physoderma trifolii.
references
Brandenburger (1985a: 317), Buhr (1965a), Klenke & Scholler (2015a), Tomasi (2012a).