Nannfeldtiomyces sparganii (Lagerheim) Vánky, 1981

on Sparganium

Sparganium erectum, België, prov. Limburg, Kinrooi-de Zig-Goort, 15.vii.2022 © Carina Van Steenwinkel

detail of a leaf, lighted from behind

spores

Sparganium erectum, Belgium, prov. Antwerp, Herselt, Varenbroek, 2.x.20211 © Carina Van Steenwinkel

lighted from behind

opened leaf spot, with spore balls

mass of spores

spores, with mycelium remnants

spores 9-12 x 13-20 µm.

gall

inconspicuous or yellowish brown, ill-delimited elongated leaf spots, up to 15 mm in size, where spore balls, mostly solitary, are embedded in the tissue. The beige spore ball, up to 0.5 mm large, consist of a loose network of hyphae and spores; there is no cortical layer.

host plants

Sparganiaceae, monophagous

Sparganium erectum.

synonyms

Entyloma sparganii (Lagerheim) Ciferri, 1924.

references

Brandenburger (1985a: 851), Klenke & Scholler (2015a), Kruse, Thiel, Frauenberger ao (2019a), Scholz & Scholz (2013a), Van Steenwinkel, Fraiture & Vanderweyen (2022a), Vánky (1981a, 1994a).