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

Euphorbia lathyris: telium (horizontal and vertical section), urediniospores, praphyses

gall

Spermogonia amphigenous. Aecia hypophyllous, orange, dish-shaped, without a peridium, on epiphyllous, deep red, yellow margined leaf spots. Uredinia orange yellow, with many capitate paraphyses, head ø 14-26 µm. Telia subepidermal, dark brown, spores columnar.

host plants

Euphorbiaceae, narrowly monophagous

Euphorbia angulata, carniolica, dulcis, esula subsp. tommasiniana, lathyris, nicaeensis, platyphyllos, stricta.

references

Blumer (1946a), Brandenburger (1985a: 338), Gâumann (1959a), González-Fragoso (1925a), Klenke & Scholler (2015a), Kruse (2019a), Losa España (1944a).