Plant Parasites of Europe

leafminers, galls and fungi

Sphacelotheca hydropiperis

Sphacelotheca hydropiperis (Schumacher) de Bary 1884

on Persicaria

Persicaria dubia

Persicaria dubia, Loenen (Ge), 15.ix.2015 © Arnold Grosscurt: healthy flowers and fruits

Sphacelotheca hydropiperis on Persicaria dubia

infected inflorescence

Sphacelotheca hydropiperis on Persicaria dubia


Sphacelotheca hydropiperis on Persicaria spec.

Persicaria spec., Diemen, Diemerbos © Miriam Langeveld

Sphacelotheca hydropiperis on Periscaria hydropiper

England, Vice County: Berks, VC 22 © Malcolm Storey,

Sphacelotheca hydropiperis on Periscaria hydropiper

detail; the columella is well recognisable

Sphacelotheca hydropiperis: spores

among the spores is a large number of hyaline sterile cells

Sphacelotheca hydropiperis: spores

the spores are finely verruculose

Sphacelotheca hydropiperis on Persicaria hydropiper

Persicaria hydropiper, Belgium, prov. Antwerp, Oud-Turnhout, de Liereman © Carina Van Steenwinkel

Sphacelotheca hydropiperis: spores



the contents of the calyce is transformed into a purplish brown mass of spores. Initially this is enclosed by a greyish peridium that soon disintegrates. When the spores are released a central columella becomes apparent.

host plants

Polygonaceae, monophagous

Persicaria dubia, hydropiper, maculosa, minor.


Ustilago hydropiperis (Schumacher) Schröter, 1877.


Ainsworth & Sampson (1950a), Brandenburger (1985a: 87), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Doppelbaur (1973a), Ellis & Ellis (1997a), Ivić, Sever, Scheuer & Lutz (2013a), Jage, Kruse, Kummer ao (2013a), Klenke (2002a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Lutz & Vánky (2009a), Riegler-Hager (2015a), Roskam (2009a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Tóth (1994a), Vanderweyen & Fraiture (2014a), Vánky (1994a), Woods, Chater, Smith ao (2018a).

Last modified 2.iv.2022