synonym: Melandrium album, divaricatum, macrocarpum, pratense; Silene alba subsp. divaricata, pratensis, pratensis subsp. divaricata

organ parasitic mode stage note taxonomic group parasite
flower borer Gelechiidae Cosmardia moritzella
leaf leaf spot Dothideales Caryophylloseptoria lychnidis
leaf vagrant summer generation Aphididae Brachycaudus divaricatae
stem vagrant Aphididae Aphis craccivora
systemic borer Anguinidae Ditylenchus dipsaci
flower gall Cecidomyiidae Contarinia steini
flower gall Microbotryales Microbotryum lychnidis-dioicae
flower gall Urocystidales Thecaphora melandrii
leaf bud gall Cecidomyiidae Neomikiella lychnidis
leaf down Erysiphales Erysiphe buhrii
leaf down Erysiphales Leveillula cylindrospora
leaf down Peronosporales Peronospora melandryi
leaf leaf spot incertae sedis Diplosporonema delastrei
leaf gall Aphididae Brachycaudus klugkisti
leaf gall Aphididae Brachycaudus lychnidis
leaf gall Aphididae Volutaphis schusteri
leaf miner Agromyzidae Amauromyza flavifrons
leaf pustule aecia uredinia telia Pucciniales Uromyces inaequialtus
leaf pustule uredinia telia Pucciniales Puccinia behenis
leaf pustule uredinia telia Pucciniales Uromyces verruculosus

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 24.vii.2019