Melampsora magnusiana Wagner, 1896

on Larix

gall

aecia bright orange, ± 1 mm, hypophyllous, often in groups, on yellowed spots of the basal leaves.

spermogonia, aecia

Papaveraceae, oligophagous

Chelidonium majus; Corydalis cava, intermedia, pumila, solida; Fumaria officinalis; Papaver dubium, rhoeas.

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 abruptly widens into a club-like head with uniformly thickened wall. Urediniospores oval, with spines all over; wal. Telia 0.5 mm, often in groups, brown, subepidermal, hypophyllous; teliospores columnar.

uredinia, telia

Salicaceae, narrowly monophagous

Populus alba, x canescens, tremula.

synonyms

see the discussion under M. pinitorqua.

references

Bahcecioglu & Kabaktepe (2012a), Brandenburger (1985a: 38), European and Mediterranean Plant Protection Organization (2009a), Gäumann (1958a), González-Fragoso (1925a), Jage, Klenke, Kruse oo (2016a), Kirbağ (2004a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Kummer (2012a), Poelt & Zwetko (1997a), Termorshuizen & Swertz (2011a), Vialle, Frey, Hambleton, Bernier & Hamelin (2011a).