List of elm diseases explained

This article is a list of diseases of elms (Ulmus spp.).

Bacterial diseases

Bacterial diseases
Bacterial wetwood/slime flux	Enterobacter nimipressuralis = Erwinia nimipressuralis Bacillus megaterium Pseudomonas fluorescens
Discoloration (xylem)	Bacteria
Elm leaf scorch	Xylella fastidiosa

Fungal diseases

Fungal diseases
Anthracnose	Asteroma inconspicuum = Gloeosporium inconspicuum Gloeosporium ulmicola
Armillaria root rot Shoestring root rot	Armillaria mellea Rhizomorpha subcorticalis [anamorph]
Blackspot	Asteroma ulmeum = Gloeosporium ulmeum Stegophora ulmea [teleomorph] = Gnomonia ulmea
Botryodiplodia canker	Sphaeropsis ulmicola = Botryodiplodia hydrodermia
Botryosphaeria canker	Botryosphaeria dothidea Fusicoccum aesculi [anamorph]
British tar spot	Dothidella ulmi
Chalara root rot	Chalara thielavioides
Coniothyrium canker	Coniothyrium spp. Coniothyrium celtidis-australis Leptosphaeria coniothyrium Diapleella coniothyrium [anamorph]
Cytospora canker	Cytospora chrysosperma Valsa sordida [anamorph] Cytospora leucosperma = Cytospora ambiens Valsa ambiens [anamorph] Cytospora nivea Leucostoma nivea [anamorph]
Cytosporina canker	Cytosporina ludibunda
Damping-off, Fusarium	Fusarium spp.
Damping-off, Pythium	Pythium ultimum
Damping-off, Rhizoctonia	Rhizoctonia solani Thanatephorus cucumeris [teleomorph]
Decay (xylem)	Trametes versicolor = Coriolus versicolor Flammulina velutipes Ganoderma applanatum = Fomes applanatus Phellinus spp. = Fomes spp. Pleurotus spp. Polyporus squamosus Other basidiomycetes
Discoloration (xylem)	Deuteromycetes
Dothiorella canker and wilt	Dothiorella ulmi
Dutch elm disease	Ophiostoma ulmi = Ceratocystis ulmi Pesotum ulmi [anamorph] = Graphium ulmi Ophiostoma novo-ulmi
Leaf blister	Taphrina ulmi
Mistletoe (infection)	Phoradendron serotinum = Phoradendron flavescens Phoradendron tomentosum Viscum album
Nectria canker	Nectria spp. Nectria cinnabarina Tubercularia vulgaris [anamorph] Nectria coccinea Cylindrocarpon candidum [anamorph] Nectria ditissima Cylindrocarpon willkommii [anamorph] Nectria galligena Cylindrocarpon heteronemum [anamorph]
Phoma canker	Phoma glomerata = Phoma conidiogena
Phomopsis canker	Phomopsis oblonga Diaporthe eres [teleomorph]
Phymatotrichum root rot (cotton root rot/Texas Root Rot)	Phymatotrichopsis omnivora = Phymatotrichum omnivorum
Phytophthora canker (pit canker)	Phytophthora inflata
Phytophthora root rot	Phytophthora megasperma
Powdery mildew	Microsphaera penicillata = M. alni Phyllactinia angulata = Phyllactinia corylea var. angulata Phyllactinia guttata Oidium sp. [anamorph] Uncinula macrospora Uncinula parvula Uncinuliella flexuosa
Schizoxylon canker	Schizoxylon microsporum
Sooty mold	Perisporiaceae (Ascomycetes): numerous dark-spored fungi imperfecti
Thyrostroma canker	Stigmina compacta = Thyrostroma compactum
Tubercularia canker	Tubercularia ulmea
Verticillium wilt	Verticillium albo-atrum Verticillium dahlia
Violet root rot	Helicobasidium brebissonii Rhizoctonia crocorum [anamorph]

Nematodes, parasitic

Nematodes, parasitic
Lance	Hoploliamus spp.
Ring	Criconemella spp.
Root-knot	Meloidoglyne spp.
Spiral	Helicotylenchus spp.
Stunt	Tylenchorhynchus spp.

Virus and Phytoplasma diseases

Virus and mycoplasmalike organism [MLO] diseases
Elm mosaic	'Elm mosaic virus'
Elm mottle	Elm mottle virus
Elm stripe	Viruslike agent
Elm witches' broom	Phytoplasma (graft-transmissible)
Elm Yellows (phloem necrosis)	Phytoplasma (graft-transmissible)
Zonate canker	'Elm zonate canker virus' (graft-transmissible)

References

• Common Names of Diseases, The American Phytopathological Society