Physoderma maculare Wallroth, 1833
on Alisma, Baldellia
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.
Brandenburger (1985a), Buhr (1964b), Klenke & Scholler (2015a), Redfern & Shirley (2011a), Tomasi (2014a).