Plant Parasites of Europe

leafminers, galls and fungi

Galium boreale

northern bedstraw

synonym: Galium hyssopifolium, septentrionale

organparasitic modestagenotetaxonomic groupparasite
leafhiddenThripidaeBelothrips acuminatus
leafvagrantTenthredinidaeAglaostigma aucupariae
leafvagrantEriophyidaeVasates spurius
leaf budgallCecidomyiidaeContarinia molluginis
leaf budgallCecidomyiidaeDasineura galiicola
leaf budgallEriophyidaeAculus anthobius
leafdownErysiphalesGolovinomyces riedlianus
leafdownErysiphalesNeoërysiphe galii
leafdownPeronosporalesPeronospora galii
leafgallEriophyidaeCecidophyes calvus
leafgallEriophyidaeCecidophyes galii
leafminerAgromyzidaeGaliomyza morio
leafpustuleChytridialesSynchytrium aureum
leafpustuleChytridialesSynchytrium galii
leafpustuleteliaPuccinialesPuccinia rubefaciens
stemgallCecidomyiidaeGeocrypta galii
stemgallCecidomyiidaeGeocrypta rostriformis
stemgallUstilaginalesMelanotaenium endogenum
systemicgallAphididaeAphis galiiscabri
stemvagrantAphididaeAmphorophora annae
stemvagrantAphididaeOssiannilssonia oelandica
stemvagrantAphididaeMyzus borealis


the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.


borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.


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The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.


Last modified 12.viii.2020