Sphaerulina gei (Roberge) Verkley, Quaedvlieg & Crous, 2013

on Geum

Sphaerulina gei: leaf spots on Geum urbanum

Geum urbanum, Belgium, prov. Flemish Brabant, Hoegaarden, Meldertbos, 30.vii.2018 © Carina Van Steenwinkel

Sphaerulina gei: leaf spots on Geum urbanum

same leaf, underside

Sphaerulina gei: leaf spots on Geum urbanum

detail

Sphaerulina gei: leaf spot with conidiodomata

upper side of a leaf spot with numerous conidia.

Sphaerulina gei: conidia

conidia

Sphaerulina gei: conidia

conidia

parasite

Leaf spots with a sharp brown margin; pycnidia mainly epiphyllous, numerous. Conidia filiform, 33-65 µm long, indistinctly septate.

host plants

Rosaceae, monophagous

Geum aleppicum, montanum, rivale, sylvaticum, urbanaum.

synonyms

Septoria gei Roberge, 1843.

references

Brandenburger (1985a: 233), Grove (1935a), Jage, Kruse, Kummer, Caspari ao (2013a), Jage, Scholler & Klenke (2010a), Mułenko, Sałata & Wołczańska (1995a), Quaedvlieg, Verkley, Shin ao (2013a), Ruszkiewicz-Michalska (2006a), Unamuno (1942a), Verkley, Quaedvlieg, Shin & Crous (2013a).