Plant Parasites of Europe

leafminers, galls and fungi

genus Onoclea

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Mycosphaerellaceae Pseudocercosporella filicis-feminae
stem borer Tenthredinidae Heptamelus viitasaarii
leaf gall Tenthredinidae Aneugmenus temporalis
leaf vagrant Tenthredinidae Strongylogaster baikalensis
stem borer Tenthredinidae Heptamelus ochroleucus
leaf vagrant Tenthredinidae Stromboceros delicatulus
leaf vagrant Tenthredinidae Strongylogaster multifasciata
leaf borer Anthomyiidae Chirosia cinerosa
leaf leaf spot Taphrinales Taphrina hiratsukae
leaf gall Platygloeales Herpobasidium struthiopteridis
leaf miner Anthomyiidae Chirosia histricina
leaf pustule uredinia telia Pucciniales Uredinopsis struthiopteridis
leaf pustule uredinia telia Pucciniales Milesina vogesiaca
leaf vagrant Aphididae Amphorophora ampullata
leaf vagrant Aphididae Aulacorthum circumflexum
stem borer rarely Blasticotomidae Blasticotoma filiceti


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.


To filter the table above, add a text to the search field (top right of the table).
To sort a column click on an arrow after the column name (both ascending and descending).
Sort multiple columns with Shift + click on the arrows.


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 9.viii.2022