Ramularia geranii (Westendorp) Fuckel, 1870

on Geranium

Ramularia geranii leaf spots on Geranium molle

Geranium molle, Belgium, prov. Antwerp, Dessel, den Hof, 11.vi.2018 © Carina Van Steenwinkel

Ramularia geranii leaf spots on Geranium molle

same leaf, underside

Ramularia geranii caespituli on Geranium molle

leaf spot, detail

Ramularia geranii caespituli on Geranium molle

colonies

Ramularia geranii on Geranium molle

conidiophores

Ramularia geranii: conidia

conidia

parasite

Leaf spots amphigenous, ultimately dark brown. Colonies mainly hypophyllous. Conidiophores in bundles. Conidia 3-6 x 10-40 µm, 0-1 septate, ± smooth.

host plants

Geranaiaceae, oligophagous

Erodium ciconium, cicutarium; Geranium collinum, columbinum, dissectum, divaricatum, macrorrhizum, molle, palustre, phaeum, pratense, pusillum, pyrenaicum, robertianum, rotundifolium, sanguineum, sylvaticum.

synonyms

Ramularia geranii var geranii.

references

Béguinot & Chevassut (1993a), Blumer (1946a), Brandenburger (1985a: 328), Braun (1998a), Ellis & Ellis (1997a), Kruse (2014a, 2019a), Ludwig (1974a), Mułenko, Sałata & Wołczańska (1995a), Negrean (1996b), Negrean & Denchev (2000a), Poelt & Fritz-Schroeder (1983a), Ruszkiewicz-Michalska (2006a), Scheuer & Bechter (2012a), Unamuno (1943a), Wołczańska (2005a).

mod 28.vii.2019