Plant Parasites of Europe

leafminers, galls and fungi

Glyceria fluitans

floating sweet-grass

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Phaeosphaeriaceae Phaeosphaeria glyceriae-plicatae
leaf leaf spot Pleosporaceae Alternaria alternata
leaf vagrant Miridae Teratocoris antennatus
leaf vagrant Lygaeidae Ischnodemus sabuleti
flower borer summer generation doubtful Chloropidae Chlorops limbatus
stem borer spring generation doubtful Chloropidae Chlorops limbatus
leaf leaf spot Capnodiales Graminopassalora graminis
leaf vagrant Delphacidae Javesella obscurella
leaf vagrant Delphacidae Struebingianella lugubrina
stem borer larva Curculionidae Bagous elegans
root scale Chrysomelidae Donacia malinovskyi
leaf vagrant Chrysomelidae Oulema erichsonii
stem borer Chloropidae Microcercis trigonella
stem borer larva Curculionidae Bagous tubulus
fruit gall Hypocreales Claviceps purpurea
leaf leaf spot Microbotryales Ustilentyloma fluitans
leaf film Ustilaginales Tranzscheliella hypodytes
leaf gall Eriophyidae Aceria tenuis
leaf miner Agromyzidae Agromyza nigripes
leaf miner Agromyzidae Chromatomyia nigra
leaf miner Crambidae Donacaula forficella
leaf miner Elachistidae Elachista pomerana
leaf miner Ephydridae Hydrellia thoracica
leaf pustule Cantharellales Ceratorhiza rhizodes
leaf pustule uredinia telia Pucciniales Puccinia graminis
leaf stripe Ustilaginales Ustilago davisii
leaf stripe Ustilaginales Ustilago filiformis
stem vagrant Aphididae Laingia psammae
root gall Plasmodiophorales Sorosphaerula radicalis
leaf vagrant summer generation Aphididae Sitobion fragariae
leaf vagrant Aphididae Sipha glyceriae
root collar vagrant summer generation Aphididae Rhopalomyzus poae


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 23.xii.2022