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on Populus

gall

uredinia hypophyllous, not causing leaf spots, 0.5 mm, yellow, flat. Throughout the uredinium stand paraphyses on a thin stem that rather gradually widens into a club-like head with uniformly thickened wall. Urediniospores oval, with spines all over. Telia 0.5 mm, often in groups, brown, subepidermal; teliospores columnar.

uredinia, telia

Salicaceae, narrowly monophagous

Populus alba, x canescens, tremula.

synonyms

see the discusson under M. pinitorqua.

references

Blumer (1946a), European and Mediterranean Plant Protection Organization (2009a), Gäuman (1959a), Klenke & Scholler (2015a), Kruse (2014a), Longo, Naldini, Paolillo ao (1997a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2011a), Vialle, Frey, Hambleton ao (2011a).