Doassansia sagittariae (Fuckel) Fisch, 1884
on Sagittaria
gall
whitish to brown leaf spots, small at first but in the end sometimes covering the entire leaf. Numerous embedded spore balls cause minuscule brown pustules. The spore balls measure 50-175 µm and consist of a central mass of spores, covered by a cortical layer of sterile cells.
host plants
Alismataceae, monophagous
Sagittaria montevidensis, natans, sagittifolia.
references
Ainsworth & Sampson (1950a), Brandenburger (1985a: 700), Buhr (1965a), Klenke (2002a), Klenke & Scholler (2015a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Vanderweyen & Fraiture (2014a), Vánky (1994a, 2012).