Plant Parasites of Europe

leafminers, galls and fungi

genus Helleborus

organparasitic modestagenotetaxonomic groupparasite
leafleaf spotDidymellaceaeAscochyta hellebori
leafleaf spotLeptospaeriaceaeConiothyrium hellebori
leafleaf spotDothideomycetesAsteromella helleboricola
leafleaf spotCapnodialesRamularia hellebori
leafleaf spotDidymellaceaeAscochyta infuscans
leafvagrantadultCurculionidaeBarynotus obscurus
leafvagrantadultCurculionidaeOtiorhynchus porcatus
stemborerCerambycidaeAgapanthia villosoviridescens
stemborerCerambycidaeParmena cruciata
stemborerCerambycidaeParmena meregallii
stemborerCerambycidaeParmena balteus
stemborerCerambycidaeParmena balearica
stemborerCerambycidaeParmena pubescens
leafvagrantAphididaeAulacorthum circumflexum
leafvagrantNoctuidaePhlogophora meticulosa
flowerhiddenThripidaeThrips flavus
leafleaf spotBotryosphaerialesPhyllosticta helleborella
leafhiddenThripidaeThrips tabaci
leafvagrantTenthredinidaeStethomostus fuliginosus
leafvagrantsummer generationAphididaeAphis fabae solanella
leafvagrantsummer generationAphididaeAphis fabae
leafdownErysiphalesErysiphe hellebori
leafdownPeronosporalesPeronospora pulveracea
leafdownPeronosporalesPlasmoverna hellebori
leafleaf spotEntylomatalesEntyloma arnaudianum
leafgallAphididaeMacrosiphum hellebori
leafgallBlastocladialesPhysoderma deformans
leafminerAgromyzidaePhytomyza hellebori
leafoviposition scarTenthredinidaeMonophadnus latus
leafpustuleaeciaPuccinialesPuccinia actaeae-agropyri
leafpustuleaeciaPuccinialesPuccinia actaeae-elymi
leafpustuleUrocystidalesUrocystis floccosa


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 20.ix.2022