Microbotryum cordae (Liro) Deml & Prillinger, 1991

on Persicaria

Persicaria maculosa, Loenen (Ge), 19.ix.2019 © Arnold Grosscurt

infected inflorescence

Persicaria hydropiper, Belgium, prov. Limbourg, Bocholt, Smeetshof, 29.viii.2019 © Carina Van Steenwinkel

infected inflorescence

not alle flowers are infected, the fungus is not fully systemic

spore mass in galled flower bud

microscopical image

spores

spores, another inago

Persicaria maculosa, Loenen (Ge), 18.x.2017 © Arnold Grosscurt: first signs

somewhat further advanced infection

some flowers already are disintegrating

destroyed inflorescence

spores

gall

The flower buds are swollen and enlarged; their contents are transformed into a reddish brown to flesh-coloured mass of spores.

host plants

Polygonaceae, narrowly monophagous

Persicaria dubia, foliosa, hydropiper, maculosa, minor.

synonyms

Ustilago cordae Liro, 1924; U. anomala var. cordae (Liro) Saville, 1953; Bauhinus cordae (Liro) Denchev, 1997; U. persicaria Ciferri, 1931; U. Liro, 1924; U. polygoni-minoris Liro, 1938; U. muricata (Cesati) Liro, 1924; U. anomala var.muricata (Cesati) Lindeberg, 195.

references

Brandenburger (1985a: 88), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Klenke (2002a), Klenke & Scholler (2015a), Koops (2013a), Lutz & Vánky (2009a), Melzer, Pittoni, Poelt & Scheuer (1984a), Redfern & Shirley (2011a), Roskam (2009a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Spooner & Legon (2006a), Tomasi (2014a), Vánky (1994a), Woods, Chater, Smith ao (2018a).