Plant Parasites of Europe

leafminers, galls and fungi

Iris pseudacorus

yellow iris

synonym: Xiphion pseudacorus

organparasitic modestagenotetaxonomic groupparasite
rootvagrantdoubtfulChrysomelidaeAphthona plenifrons
flowerhiddenThripidaeFrankliniella intonsa
flowerhiddenThripidaeThrips flavus
rootvagrantChrysomelidaeAphthona semicyanea
rootborerChrysomelidaeAphthona nonstriata
leafleaf spotBotryosphaerialesPhyllosticta iridum
stemborerNoctuidaeHydraecia micacea
leafvagrantTenthredinidaeRhadinoceraea micans
leafhiddenTortricidaeClepsis spectrana
leafhiddenTortricidaeAphelia paleana
leafhiddenTortricidaeParamesia gnomana
leafhiddenThripidaeIridothrips iridis
leafvagrantsummer generationAphididaeAphis fabae
fruitgallCurculionidaeMononychus punctumalbum
leafminer>borerNoctuidaeHelotropha leucostigma
leafminer>borerNoctuidaeOxytripia orbiculosa
leafleaf spotBlastocladialesPhysoderma iridis
leafgallCecidomyiidaeDicerura iridis
leafminerAgromyzidaeCerodontha iraeos
leafminerGelechiidaeMonochroa divisella
leafminerNoctuidaeGlobia algae
leafminerNoctuidaeGlobia sparganii
leafpustuleuredinia teliaPuccinialesPuccinia iridis
systemicvagrantAphididaeAphis newtoni
rootvagrantAphididaeDysaphis tulipae


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 14.xi.2020