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).