Plant Parasites of Europe

leafminers, galls and fungi

Doassansia borealis

Doassansia borealis Farlow, 1883

on Sagittaria


Up to 10 mm large leaf spots, with bark brown spore balls discernable as minute dark spots. A spore ball, 80-90 x 100-250 µm, consists of a central mass of spores, surrounded by 1-3 layers of small, thick-walled, flattened sterile cells.

host plants

Alismataceae, monophagous

Sagittaria natans.


Brandenburger (1985a: 699), Vánky (2012a: 116).

Last modified 2.xii.2022