Melampsora helioscopiae (Persoon) Winter, 1881

on Euphorbia

Melampsora helioscopiae: telium

Euphorbia peplus, from González-Fragoso (1925a): telium (section)


Spermogonia yellow. Aecia also on the stems, orange, without a peridium. Uredinia orange, with many, clavate, paraphyses; de diameter of the heads is 17-25 µm, the wall thickness 4-5 µm. Telia amphigenous, subepidermal, brownish black.

host plants

Euphorbiaceae, narrowly monophagous

Euphorbia helioscopia, peplus, pterococca.


sometimes considered conspecific with M. euphorbiae.


Blumer (1946a), Brandenburger (1985a), Gämann (1959a), González-Fragoso (1925a), Klenke & Scholler (2015a), Kruse (2019a), Llorens i Villagrasa (1984a), Losa España (1942a), Poelt & Zwetko (1997a), Săvulescu & Rayss (1935a), Termorshuizen & Swertz (2011a), Unamuno (1942a).

mod 22.vii.2019