Plant Parasites of Europe

leafminers, galls and fungi

Physoderma menyanthis

Physoderma menyanthis (de Bary) de Bary, 1874

on Menyanthes

Physoderma menyanthids on Menyanthes trifoliata

Menyanthes trifoliata, Belgium, prov. Limbourg, Ham, Immertse bossen, 29.v.2022 © Carina Van Steenwinkel

Physoderma menyanthids on Menyanthes trifoliata

detail

Physoderma menyanthids on Menyanthes trifoliata

squash of a sorus

Physoderma menyanthids on Menyanthes trifoliata

up to vier sporangia per cell observed

Physoderma menyanthids on Menyanthes trifoliata

isolated sporangia

Physoderma menyanthids on Menyanthes trifoliata

te sporangia are thin-walled

Physoderma menyanthids on Menyanthes trifoliata

measurements in the present material 20-27 x 28-35 µm (n=13)

gall

up to 1.5 mm large, first white or reddish, eventually brown pustules on the lamina.

host plants

Menyanthidaceae, monophagous

Menyanthes trifoliata.

synonyms

Cladochytrium menyanthis (de Bary) de Bary, 1897.

notes

Per host plant ce, up to four sporangia were observed. That is in agreement with an illustration by Coupin, but strongly differs from the maximum of 16 that is mentioned by Brandenburger. Klenke & Scholler state the mainly the petioles are infected; that too could not be confirmed in the Belgian material: the petioles were completely clean.

references

Brandenburger (1985a: 495), Buhr (1964b), Coupin (1911a), Doppelbaur (1973a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Redfern & Shirley (2011a), Scholler & Schubert (1993a), Tomasi (2014a).

Last modified 2.vi.2022