Plant Parasites of Europe

leafminers, galls and fungi

Elymus caninus

bearded couch

synonym: Agropyron caninum, donianum; Elytrigia, Roegneria, canina

organparasitic modestagenotetaxonomic groupparasite
leafvagrantNoctuidaeApamea scolopacina
fruitborerChloropidaeDicraeus rossicus
leafhiddenHesperiidaeOchlodes sylvanus
leafvagrantNymphalidaeCoenonympha pamphilus
leafminer>borerOchsenheimeriidaeOchsenheimeria vacculella
leafdownErysiphales ErysiphaceaeBlumeria graminis
leafdownPeronosporalesSclerospora graminicola
leaffilmUstilaginalesTranzscheliella hypodytes
leafgallAphididaeDiuraphis frequens
leafgallPeronosporalesSclerophthora macrospora
leafgallTarsonemidaeSteneotarsonemus canestrinii
leafminerAgromyzidaeAgromyza nigrociliata
leafminerAgromyzidaeCerodontha pygmaea
leafminerElachistidaeElachista adscitella
leafminerElachistidaeElachista apicipunctella
leafpustuleCantharellalesCeratorhiza rhizodes
leafpustuleuredinia teliaPuccinialesPuccinia actaeae-agropyri
leafpustuleuredinia teliaPuccinialesPuccinia agropyri
leafpustuleuredinia teliaPuccinialesPuccinia cerinthes-agropyrina
leafpustuleuredinia teliaPuccinialesPuccinia clematidis-secalis
leafpustuleuredinia teliaPuccinialesPuccinia graminis
leafpustuleUrocystidalesUrocystis agropyri
leafstripeuredinia teliaPuccinialesPuccinia striiformis
leafstripeUstilaginalesUstilago serpens
stemgallCecidomyiidaeHybolasioptera fasciata
stemgallChloropidaeChlorops pumilionis
stemgallEurytomidaeTetramesa hordei
stemgallEurytomidaeTetramesa hyalipennis


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 28.viii.2021