Melampsora pulcherrima Maire, 1921

on Mercurialis

gall

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

gall

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.

uredinia, telia

Salicaceae, narrowly monophagous

Populus alba, canescens.

synonyms

see the discusson under M. pinitorqua.

notes

species from southern Europe.

references

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).

28/05/2017

mod 16.vii.2017