Ramularia bistortae Fuckel, 1870

on Bistorta

Ramularia bistortae: leaf spots on Bistorta officinalis

Bistorta officinalis, Belgium, prov. Limbourg, Koersel, 12.ix.2018 © Carina Van Steenwinkel

Ramularia bistortae: leaf spots on Bistorta officinalis

infected leaf, upper side

Ramularia bistortae: leaf spots on Bistorta officinalis

same leaf, underside

Ramularia bistortae: leaf spot on Bistorta officinalis

detail

Ramularia bistortae: conidiophores

conidiophores

Ramularia bistortae: leaf spots on Bistorta officinalis

Bistorta officinalis, Belgium, prov. Antwerp, Meerhout, 4.v.2018 © Carina Van Steenwinkel

Ramularia bistortae: leaf spots on Bistorta officinalis

same leaf, underside

Ramularia bistortae: conidia

conidia

Ramularia bistortae: conidia

conidia in an air bubble, clearly showing the surface ornamentation

parasite

Leaf spots amphigenous. Conidiophores rather long, 30-100 µm. Conidia 4-6 x 6-16 µm, hyali ne, smooth to verruculose.

host plants

Polygonaceae, monophagous

Bistorta officinalis, vivipara.

synonyms

Ovularia bistortae (Fuckel) Saccardo 1886.

references

Brandenburger (1985a: 86), Braun (1998a), Chater, Woods, Stringer, ao (2021a), Ellis & Ellis (1997a), Kozłowska, Mułenko & Heluta (2015a), Negrean (1996b), Wołczańska (2005a).