Melampsora pulcherrima Maire, 1921
Aecia pulvinate (not cupulate), mainly on the stem, that may be completely covered over a length of several cm.
Euphorbiaceae, narrowly monophagous
Not on M. perennis.
Populus alba, from González-Fragoso (1925a): paraphyses, urediniospores
uredinia hypophyllous, causing no discolouration of the leaf, 0.1 mm, golden yellow, pulvinate. Throughout the uredinium stand paraphyses on thin stems that rather gradually widen into a club-like head with especially apically thickened wall. Urediniospores oval, with spines all over; wall of uniform thickness. Telia hypophyllous, 1 mm, dark brown, subpepidermal; teliospores columnar.
Salicaceae, narrowly monophagous
Populus alba, canescens.
see the discusson under M. pinitorqua.
species from southern Europe.
Bahcecioglu & Kabaktepe (2012a), Brandenburger (1985a: 38), European and Mediterranean Plant Protection Organization (2009a), Gäumann (1959a), González-Fragoso (1925a), Klenke & Scholler (2015a), Llorens i Villagrasa (1984a), Poelt & Zwetko (1997a), Savchenko, Heluta, Wasser & Nevo (2014c), Vialle, Frey, Hambleton, Bernier & Hamelin (2011a).