Plant Parasites of Europe

leafminers, galls and fungi

gallers on Laser

Dichotomous table for gallers on Laser trilobum

by Hans Roskam

1a On leaves => 2

1b Centre of (partial) umbel or stalk of umbel ± swollen, globular to club-shaped. Gall one-to multi-chambered, inner wall covered with mycelium. Each chamber containing a red larva. Lasioptera carophila

2a Bulge-shaped pads bearing yellowish spermogonia and aecia on petioles, -midrib and main veins. Puccinia sileris

2b Leaf tip undulately curved. Trioza sp.

Last modified 9.vii.2020