Plant Parasites of Europe

leafminers, galls and fungi

Melampsora pulcherrima

Melampsora pulcherrima Maire, 1921

on Mercurialis

Melampsora pulcherrima on Mercurialis annua

Mercurialis annua, Crete, Rethimnon, 11.ii.2021 © Paul Fontaine


Aecia pulvinate (not cupulate), mainly on the stem, that may be completely covered over a length of several cm.

spermogonia, aecia

Euphorbiaceae, narrowly monophagous

Mercurialis annua.

Not on M. perennis.

on Populus

Melampsora pulcherrima: paraphyses, urediniospores

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, subepidermal; teliospores columnar.

uredinia, telia

Salicaceae, narrowly monophagous

Populus alba, canescens.


see the discussion under M. pinitorqua.


species from southern Europe.


Bahcecioglu & Kabaktepe (2012a), Brandenburger (1985a: 38, 343), European and Mediterranean Plant Protection Organization (2009a), Gäumann (1959a), González-Fragoso (1925a), Klenke & Scholler (2015a), Kruse, Thiel, Frauenberger ao (2019a), Kruse, Thiel, Klenke, ao (2022a), Llorens i Villagrasa (1984a), Poelt & Zwetko (1997a), Savchenko, Heluta, Wasser & Nevo (2014c), Vialle, Frey, Hambleton, Bernier & Hamelin (2011a).

Last modified 6.iv.2023