Plant Parasites of Europe

leafminers, galls and fungi

Rorippa amphibia

great yellow-cress

synonym: Brachiolobus amphibius; Myagrum, Nasturtium, amphibium; Radicula amphibia

organ parasitic mode stage note taxonomic group parasite
stem borer Curculionidae Aulacobaris lepidii
flower hidden Thripidae Chirothrips manicatus
flower predator Phlaeothripidae Haplothrips subtilissimus
flower hidden Aeolothripidae Melanthrips fuscus
leaf hidden Thripidae Thrips angusticeps
leaf leaf spot Mycosphaerellaceae Cercospora nasturtii
leaf leaf spot Phyllostictaceae Phyllosticta anceps
leaf leaf spot Mycosphaerellaceae Cercospora armoraciae
leaf vagrant Pentatomidae Eurydema dominulus
leaf vagrant Pieridae Pieris brassicae
leaf vagrant Pieridae Pieris rapae
leaf vagrant Pieridae Pieris napi
leaf vagrant Pieridae Pieris brassicae
leaf vagrant Pieridae Pieris rapae
root vagrant Chrysomelidae Phyllotreta cruciferae
fruit borer larva Curculionidae Ceutorhynchus querceti
leaf miner Chrysomelidae Phyllotreta nemorum
flower hidden Crambidae Evergestis extimalis
stem gall Curculionidae Ceutorhynchus griseus
leaf vagrant Chrysomelidae Phaedon laevigatus
leaf vagrant Chrysomelidae Phaedon cochleariae
leaf vagrant Chrysomelidae Phaedon armoraciae
root vagrant Chrysomelidae Phyllotreta undulata
root vagrant Chrysomelidae Phyllotreta punctulata
root vagrant Chrysomelidae Phyllotreta atra
root borer Chrysomelidae Phyllotreta ochripes
root vagrant Chrysomelidae Phyllotreta dilatata
root vagrant Chrysomelidae Phyllotreta tetrastigma
root vagrant Chrysomelidae Phyllotreta exclamationis
root vagrant Chrysomelidae Phyllotreta diademata
fruit borer larva Curculionidae Ceutorhynchus querceti
fruit borer larva Curculionidae Ceutorhynchus typhae
fruit borer larva Curculionidae Amalorrhynchus melanarius
stem borer larva Curculionidae Poophagus sisymbrii
stem borer larva Curculionidae Poophagus hopffgarteni
root collar borer larva Curculionidae Ceutorhynchus scapularis
root collar borer larva Curculionidae Lixus myagri
flower gall Cecidomyiidae Dasineura sisymbrii
leaf down Erysiphales Erysiphe cruciferarum
leaf down Peronosporales Hyaloperonospora rorippae-islandicae
leaf gall Curculionidae Ceutorhynchus chalibaeus
leaf miner Agromyzidae Liriomyza strigata
leaf miner Curculionidae Ceutorhynchus minutus
leaf miner Drosophilidae Scaptomyza flava
leaf pustule Albuginales Albiginaceae Albugo rorippae
leaf pustule Blastocladiales Physoderma magnusianum
leaf pustule Blastocladiales Physoderma vagans
root collar gall Curculionidae Ceutorhynchus assimilis

Organ

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.

PARASITIC MODE

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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IMPORTANT

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 1.xii.2023