Plant Parasites of Europe

leafminers, galls and fungi

Tripleurospermum maritimum

sea mayweed

synonym: Matricaria maritima

organparasitic modestagenotetaxonomic groupparasite
leafvagrantMiridaePlagiognathus chrysanthemi
leafvagrantMiridaeAdelphocoris lineolatus
leafvagrantMiridaeClosterotomus norwegicus
leafvagrantMiridaePhytocoris varipes
leafvagrantMiridaeLygus maritimus
fruitvagrantLygaeidaeNysius graminicola
fruitvagrantLygaeidaeEmblethis denticollis
fruitvagrantLygaeidaeMetopoplax fuscinervis
fruitvagrantLygaeidaeMetopoplax ditomoides
leafvagrantMiridaeConostethus venustus
flowervagrantNoctuidaeCucullia chamomillae
leafvagrantCixiidaePentastiridius leporinus
stemborerTortricidaeCochylidia implicitana
flowerborerlarvaCurculionidaePseudostyphlus pillumus
leafminerAgromyzidaeChromatomyia horticola
flowerborerTephritidaeTrupanea stellata
leafdownErysiphalesGolovinomyces macrocarpus
leafdownPeronosporalesParaperonospora leptosperma
leafdownPeronosporalesPeronospora radii
leafleaf spotEntylomatalesEntyloma matricariae
leafminerAgromyzidaePhytomyza pullula
leafpustuleuredinia teliaPuccinialesPuccinia balsamitae
stemborerAgromyzidaeNapomyza lateralis
unknownunknownAgromyzidaeLiriomyza intonsa
leafvagrantAphididaeMyzus cymbalariae
root collarvagrantAphididaeAphis lindae


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 22.iv.2022