Plant Parasites of Europe

leafminers, galls and fungi

genus Magnolia

organ parasitic mode stage note taxonomic group parasite
dead wood borer Cerambycidae Prinobius myardi
leaf scale Pseudococcidae Pseudococcus maritimus
stem scale Margarodidae Icerya purchasi
stem scale Pseudococcidae Pseudococcus viburni
systemic down Sclerotiniaceae Botrytis cinerea
leaf leaf spot Mycosphaerellaceae Sphaerella elatior
leaf pustule Ascomycota incertae sedis Ectostroma liriodendri
leaf leaf spot Pleosporaceae Macrosporium cladosporioides
leaf leaf spot Pleosporaceae Stemphylium trichellum
leaf leaf spot Cladosporiaceae Cladosporium delectum
leaf leaf spot Cladosporiaceae Cladosporium magnoliae
leaf leaf spot Camarosporiaceae Camarosporium nervisequum
leaf leaf spot Didymellaceae Ascochyta magnoliae
leaf leaf spot Botryosphaeriaceae Microdiplodia punctifolia
leaf leaf spot Phyllostictaceae Phyllosticta concentrica
leaf leaf spot Phyllostictaceae Phyllosticta gracilis
leaf leaf spot Mycosphaerellaceae Septoria caerulescens
leaf leaf spot Botryosphaeriaceae Sphaeropsis magnoliae
leaf leaf spot Phaeosphaeriaceae Hendersonia magnoliae
leaf leaf spot Phyllostictaceae Phyllosticta cookei
stem kanker Nectriaceae Nectria cinnabarina
leaf leaf spot Gnomoniaceae Asteroma alneum
leaf leaf spot Glomerellaceae Colletotrichum gloeosporioides
stem borer Cossidae Zeuzera pyrina
leaf vagrant Miridae Liocoris tripustulatus
leaf scale Aleyrodidae Siphoninus phillyreae
scale Diaspididae Hemiberlesia cyanophylli
scale Diaspididae Chrysomphalus dictyospermi
stem scale Pseudococcidae Pseudococcus longispinus
stem scale Coccidae Ceroplastes ceriferus
stem scale Coccidae Ceroplastes japonicus
stem vagrant adult Aphrophoridae Aphrophora alni
leaf vagrant Tetranychidae Tetranychus urticae
leaf scale Aleyrodidae Bemisia tabaci
leaf scale Aleyrodidae Trialeurodes vaporariorum
leaf leaf spot Botryosphaeriales Phyllosticta magnoliae
stem scale Coccidae Parthenolecanium corni
leaf vagrant Eriophyidae Aculops magnolivora
leaf scale Aleyrodidae Aleurodicus dispersus
leaf scale Coccidae Pulvinaria floccifera
leaf scale Diaspididae Aspidiotus nerii
leaf scale Diaspididae Lepidosaphes beckii
stem scale Coccidae Pulvinaria regalis
leaf scale Coccidae Pulvinaria hydrangeae
stem vagrant Aphididae Aphis aurantii
leaf vagrant Aphididae Aphis spiraecola
leaf down Erysiphales Erysiphe magnifica
leaf vagrant summer generation Aphididae Aphis fabae


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.


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