fine-leaved water-dropwort

synonym: Oenanthe phellandrium

organ parasitic mode stage note taxonomic group parasite
stem borer Elachistidae Depressaria ultimella
stem borer larva Curculionidae Lixus paraplecticus
leaf vagrant summer generation Aphididae Cavariella aegopodii
stem borer Agromyzidae Napomyza carotae
flower gall Cecidomyiidae Lasioptera carophila
leaf down Erysiphales Erysiphe heraclei
leaf down Peronosporales Plasmopara nivea
leaf miner Agromyzidae Phytomyza chaerophylli
leaf miner Agromyzidae Phytomyza oenanthica
leaf miner Agromyzidae Phytomyza phellandrii
leaf miner Depressariidae Depressaria daucella
leaf pustule Blastocladiales Physoderma vagans
leaf pustule Chytridiales Synchytrium aureum
leaf pustule aecia Pucciniales Uromyces lineolatus
leaf vagrant summer generation Aphididae Pemphigus protospirae
root collar gall Agromyzidae Napomyza annulipes

Organ

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.

PARASITIC MODE

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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IMPORTANT

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.

 

mod 10.viii.2019