Plant Parasites of Europe

leafminers, galls and fungi

Crepis paludosa

marsh hawk’s-beard

synonym: Aracium, Hieracium, paludosum; Soyeria paludosa

organ parasitic mode stage note taxonomic group parasite
stem gall Cynipidae Timaspis lusitanica
flower borer Tephritidae Campiglossa guttella
leaf leaf spot Dothideomycetes incertae sedis Asteromella eximia
leaf vagrant Noctuidae Xylena vetusta
flower gall Tephritidae Campiglossa producta
leaf scale Aleyrodidae Aleyrodes lonicerae
stem vagrant Aphididae Uroleucon cichorii
stem miner Agromyzidae Ophiomyia heringi
root collar vagrant doubtful Psyllidae Craspedolepta sonchi
systemic borer Anguinidae Ditylenchus dipsaci
flower borer Tephritidae Trupanea stellata
leaf down Erysiphales Golovinomyces cichoracearum
leaf down Erysiphales Podosphaera erigerontis-canadensis
leaf down Peronosporales Bremia lactucae
leaf gall Agromyzidae Phytomyza araciocecis
leaf gall Agromyzidae Phytomyza cecidonomia
leaf gall Blastocladiales Physoderma crepidis
leaf miner Agromyzidae Liriomyza endiviae
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Phytomyza marginella
leaf miner Tephritidae Trypeta immaculata
leaf pustule aecia uredinia telia Pucciniales Puccinia major
leaf pustule Taphrinales Protomyces crepidis-paludosae
flower vagrant summer generation Aphididae Hyperomyzus picridis
flower vagrant Aphididae Uroleucon riparium


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 10.ii.2023