Plant Parasites of Europe

leafminers, galls and fungi

gallers on Bartsia

Dichotomous table for gallers on Bartsia alpina

by Hans Roskam

1a On parts above ground => 2

1b Woody swelling of root, 20 mm long, 15–18 mm thick. Mirificarma mulinella

2a On leaves => 3

2b Shoot tip ± unopened. Leaves folded, slightly thickened, sometimes erect, enclosing tuft-like severely disfigured leaf- or flower primordia. Cause unknown – ? gall midge

3a Young leaves with slightly swollen folds at base. Cause unknown – ? gall midge

3b Leaf blades rolled downwards at margin, there discoloured yellowish or reddish, externally ± abnormally pubescent. Aceria bartschiae

Last modified 23.vi.2020