Plant Parasites of Europe

leafminers, galls and fungi

Rumex hydrolapathum

water dock

organparasitic modestagenotetaxonomic groupparasite
leafleaf spotDidymellaceaeDidymella acetosellae
leafleaf spotMycosphaerellaceaeRamularia rumicis
leafvagrantNoctuidaeLacanobia suasa
root collarborerNoctuidaeHydraecia ultima
leafvagrantNoctuidaeXylena vetusta
leafvagrantNoctuidaeAmmoconia caecimacula
leafvagrantNoctuidaeSimyra albovenosa
stemborerNoctuidaeHydraecia micacea
leafvagrantGeometridaeTimandra comae
leafvagrantLycaenidaeLycaena dispar
leafvagrantChrysomelidaeGalerucella aquatica
rootborerChrysomelidaeChaetocnema concinna
leafvagrantChrysomelidaeGastrophysa viridula
leafvagrantTenthredinidaeEuura annulata
root collarborerCrambidaeOstrinia palustralis
systemicborerGelechiidaeMonochroa palustrella
stemborerlarvaApionidaePerapion hydrolapathi
root collarborerlarvaCurculionidaeRhinoncus pericarpius
stemborerlarvaCurculionidaeLixus bardanae
stemborerlarvaCurculionidaeLixus bardanae
rootborerSesiidaePyropteron chrysidiformis
leafleaf spotCapnodialesRamularia pratensis
fruitvagrantColeophoridaeColeophora hydrolapathella
leafleaf spotBlastocladialesPhysoderma majus
leafleaf spotCapnodialesRamularia rubella
leafminerAnthomyiidaePegomya solennis
leafminermainCurculionidaeHypera rumicis
leafminerGracillariidaeCalybites phasianipennella
leafpustuleaeciaPuccinialesPuccinia phragmitis
leafpustuleuredinia teliaPuccinialesUromyces rumicis
stemborerApionidaeApion frumentarium
stemdownErysiphalesErysiphe polygoni
flowervagrantAphididaeAphis acetosae
root collarvagrantsummer generationAphididaeDysaphis radicola
leafgallAphididaeAphis rumicis


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 5.ix.2022