Physoderma maculare Wallroth, 1833

on Alisma, Baldellia

gall

low, brownish black ridges, some mm long and 0.5 mm wide, on the leaves and stems. In the tissue cells with 1-3 reddish brown thick-walled resting sporangia.

host plants

Alismataceae, oligophagous

Alisma gramineum, plantago-aquatica; Baldelllia ranunculoides.

references

Brandenburger (1985aL 699), Buhr (1964b), Klenke & Scholler (2015a), Redfern & Shirley (2011a), Roskam (2019a), Tomasi (2014a).