Plant Parasites of Europe

leafminers, galls and fungi

genus Armoracia

organ parasitic mode stage note taxonomic group parasite
root film Pythiaceae Pythium aphanidermatum
root film Ceratobasidiaceae Rhizoctonia solani
systemic down Sclerotiniaceae Botrytis cinerea
leaf leaf spot Didymellaceae Ascochyta matthiolae
leaf leaf spot Mycosphaerellaceae Neopseudocercosporella brassicae
fruit leaf spot Leptospaeriaceae Plenodomus lingam
leaf leaf spot Mycosphaerellaceae Septoria armoraciae
root film Plectosphaerellaceae Verticillium dahliae
systemic pustule Sclerotiniaceae Sclerotinia sclerotiorum
leaf leaf spot Mycosphaerellaceae Cercospora armoraciae
leaf vagrant Pentatomidae Eurydema oleracea
fruit vagrant Pieridae Anthocharis cardamines
leaf vagrant Pieridae Pieris brassicae
leaf vagrant Pieridae Pieris rapae
leaf vagrant Pieridae Pieris napi
leaf miner Chrysomelidae Phyllotreta nemorum
stem borer Curculionidae Ceutorhynchus sulcicollis
stem borer Curculionidae Aulacobaris coerulescens
unknown unknown Curculionidae Aulacobaris janthina
root vagrant Chrysomelidae Phyllotreta atra
leaf vagrant Chrysomelidae Phaedon laevigatus
leaf vagrant Chrysomelidae Phaedon cochleariae
leaf vagrant Chrysomelidae Phaedon armoraciae
root vagrant Chrysomelidae Phyllotreta undulata
root vagrant Chrysomelidae Phyllotreta atra
root vagrant Chrysomelidae Phyllotreta cruciferae
root vagrant Chrysomelidae Phyllotreta astrachanica
root vagrant Chrysomelidae Phyllotreta punctulata
root vagrant Chrysomelidae Phyllotreta nigripes
root vagrant Chrysomelidae Phyllotreta diademata
root vagrant Chrysomelidae Phyllotreta consobrina
leaf vagrant Tenthredinidae Athalia rosae
leaf hidden Crambidae Evergestis pallidata
leaf leaf spot Capnodiales Ramularia armoraciae
leaf gall Aphrophoridae Philaenus spumarius
fruit borer larva Curculionidae Ceutorhynchus cochleariae
stem borer larva Curculionidae Ceutorhynchus ignitus
root collar borer larva Curculionidae Lixus albomarginatus
flower vagrant Aphididae Smiela fusca
leaf miner Agromyzidae Chromatomyia horticola
systemic borer Anguinidae Ditylenchus dipsaci
flower gall Cecidomyiidae Contarinia nasturtii
flower gall Cecidomyiidae Dasineura armoraciae
leaf down Erysiphales Erysiphe cruciferarum
leaf down Peronosporales Hyaloperonospora cochleariae
leaf gall Curculionidae Ceutorhynchus chalibaeus
leaf miner Agromyzidae Liriomyza bryoniae
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Agromyzidae Phytomyza rufipes
leaf miner Curculionidae Ceutorhynchus minutus
leaf miner Drosophilidae Scaptomyza flava
leaf miner Plutellidae Plutella xylostella
leaf pustule Albuginales Albiginaceae Albugo candida
stem borer Chrysomelidae Phyllotreta armoraciae
stem borer Curculionidae Aulacobaris lepidii
stem gall Curculionidae Ceutorhynchus griseus
root collar gall Curculionidae Ceutorhynchus assimilis
root collar gall Plasmodiophorales Plasmodiophora brassicae
leaf vagrant summer generation Aphididae Aphis nasturtii


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 11.x.2022