Diseases Foliage Diseases

Diseases - Foliage Diseases

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Subject	Scientific Name	Images
alfalfa leaf spot	Pseudopeziza medicaginis	1
Alternaria black molds / stem cankers	Alternaria spp.	32
Alternaria blight	Alternaria dauci	1
Alternaria blight	Alternaria dianthicola	10
Alternaria blight	Alternaria zinniae	2
Alternaria leaf blight	Alternaria cucumerina	14
Alternaria leaf spot	Alternaria padwickii	3
angular leaf spot of cotton	Xanthomonas citri ssp. malvacearum	4
angular leaf spot of strawberry	Xanthomonas fragariae	15
anthracnose	Apiognomonia quercina	1
anthracnose	Apiognomonia spp.	6
anthracnose	Colletotrichum acutatum	7
anthracnose	Colletotrichum coccodes	2
anthracnose	Colletotrichum dematium	1
anthracnose	Colletotrichum fragariae	4
anthracnose	Colletotrichum graminicola	5
anthracnose	Colletotrichum nicotianae	2
anthracnose	Colletotrichum orbiculare	40
anthracnose	Colletotrichum spp.	11
anthracnose	Colletotrichum truncatum	15
anthracnose	Elsinoe veneta	2
anthracnose	Gnomonia spp.	1
anthracnose	Phyllachora repens	1
anthracnose	Polystigma fulvum	2
Anthracnose, pink boll rot or seedling blight of cotton	Colletotrichum gossypii	1
apple scab	Venturia inaequalis	26
apricot chlorotic leafroll	Phytoplasma	3
Arabis Mosaic Virus	Nepovirus ArMV	8
Ascochyta blight	Ascochyta compositarum	1
Ascochyta blight	Ascochyta lentis	7
Ascochyta blight of cotton	Ascochyta gossypii	5
Ascochyta fungi	Ascochyta spp.	17
ash anthracnose	Gnomoniella fraxini	9
ash leaf spot	Mycosphaerella fraxinicola	1
aster yellows phytoplasma	Candidatus Phytoplasma asteris	26
bacterial leaf blight of rice	Xanthomonas oryzae pv. oryzae	5
bacterial leaf streak	Xanthomonas oryzae pv. oryzicola	4
bakanae of rice	Fusarium fujikuroi	2
barley scald	Rhynchosporium secalis	3
Barley Stripe Mosaic Virus	Hordeivirus BSMV	1
basil downy mildew	Peronospora belbahrii	3
bean angular leaf spot	Phaeoisariopsis griseola	12
bean anthracnose	Colletotrichum lindemuthianum	12
bean rust	Uromyces phaseoli var. typica	1
Beet Curly Top Virus	Hybrigeminivirus BCTV	28
birch rust	Melampsoridium betulinum	1
bitter leaf	Ceratocystis paradoxa	6
black Sigatoka disease	Mycosphaerella fijiensis	11
black spot	Alternaria brassicicola	10
black spot	Diplocarpon rosae	28
black spot of Japanese pear	Alternaria kikuchiana	1
blue mold	Peronospora tabacina	37
Blumeriella leaf spot of cherry and plum	Blumeriella jaapii	2
Botrytis leaf blight	Botrytis squamosa	6
bronze leaf disease	Apioplagiostoma populi	16
brown felt blight	Herpotrichia juniperi	7
brown felt blight of pines	Neopeckia coulteri	6
Brown needle blight of pine	Mycosphaerella gibsonii	1
brown spot	Alternaria alternata	15
brown spot needle blight of pine	Mycosphaerella dearnessii	31
brown spot of corn	Physoderma maydis	12
brown spot of rice	Cochliobolus miyabeanus	9
camellia leaf gall	Exobasidium camelliae	3
canker and die back of Siberian Elm	Tubercularia ulmea	2
carrot leaf blight	Cercospora carotae	1
Cercospora leaf spot	Cercospora arachidicola	1
Cercospora leaf spot	Cercospora beticola	14
Cercospora leaf spot	Cercospora citrullina	5
Cercospora leaf spot	Cercospora fici	5
Cercospora leaf spot	Cercospora zeae-maydis	11
Cercospora leaf spot of rose	Cercospora rosicola	2
Chaetoseptoria leaf spot	Chaetoseptoria wellmanii	3
cherry leaf spot	Blumeria jaapii	1
Cherry Little Cherry Virus		2
Cherry Rasp Leaf Virus	Nepovirus CRLV	3
cherry-spruce rust	Pucciniastrum areolatum	14
Chrysanthemum Stunt Viroid	Pospiviroid CSVd	3
chrysanthemum white rust	Puccinia horiana	10
Chrysomyxa rust of spruce	Chrysomyxa ledi	3
citrus blight disease		10
citrus canker	Xanthomonas citri	46
citrus greening	Candidatus Liberibacter asiaticus	18
Citrus Leprosis Virus	Unassigned Rhabdovirus CiLV	4
Citrus Tatter Leaf Virus	Capillovirus CTLV	2
Cochliobolus leaf spot	Bipolaris sorokiniana	2
Cochliobolus leaf spot / black kernel	Cochliobolus lunatus	4
coffee leaf rust	Hemileia vastatrix	4
common corn rust	Puccinia sorghi	16
common snow mold	Phacidium infestans	1
crown rust	Puccinia coronata	9
Cucurbit Yellow Stunting Disorder Virus	Crinivirus CYSDV	1
Curvularia fungus	Curvularia trifolii	2
Cyclaneusma needle cast	Cyclaneusma minus	7
Cylindrocladium black rot	Cylindrocladium parasiticum	3
dead spot	Ophiosphaerella agrostidis	2
Diplodia blight	Sphaeropsis sapinea	151
dogwood anthracnose	Discula destructiva	32
Dothistroma needle blight	Mycosphaerella pini	20
Douglas-fir needlecast	Rhabdocline pseudotsugae	14
downy mildew	Bremia lactucae	18
downy mildew	Hyaloperonospora brassicae	3
downy mildew	Hyaloperonospora parasitica	11
downy mildew	Peronospora destructor	44
downy mildew	Peronospora farinosa	3
downy mildew	Peronospora lamii	14
downy mildew	Peronospora manshurica	13
downy mildew	Peronospora parasitica	5
downy mildew	Peronospora sparsa	4
downy mildew	Peronospora spp.	3
downy mildew	Plasmopara halstedii	3
downy mildew	Plasmopara obducens	23
downy mildew	Plasmopara viticola	8
downy mildew	Pseudoperonospora cubensis	97
downy mildew	Sclerophthora macrospora	19
downy spot	Microstroma juglandis	5
Drechslera leaf spot	Drechslera spp.	7
dry bean rust	Uromyces appendiculatus	72
early blight	Alternaria solani	90
edema		9
Elytroderma needle cast of pine	Elytroderma deformans	12
excessive water uptake		1
eye spot	Kabatiella zeae	10
eye spot	Phyllosticta minima	11
fir needle cast	Isthmiella abietis	1
fir needle casts	Lirula spp.	1
fir-fireweed rust	Pucciniastrum epilobii	13
Floury leaf spot	Mycovellosiella phaseoli	6
foot rot	Pseudocercosporella herpotrichoides	2
frog-eye leafspot	Cercospora nicotianae	3
frogeye leaf spot	Cercospora sojina	11
grape anthracnose	Elsinoe ampelina	2
Grapevine Fanleaf Virus	Nepovirus GFLV	1
grapevine flavescence dorée phytoplasma	Phytoplasma	1
Grapevine Vein Yellows and Leaf Roll		2
Graphiola leaf spot	Graphiola phoenicis	7
gray leaf spot	Magnaporthe grisea	17
gray leaf spot	Stemphylium solani	3
green alga	Cephaleuros virescens	15
green algae	Cephaleuros spp.	1
guava rust	Puccinia psidii	5
Guignardia blotch of buckeyes and horsechestnuts	Guignardia aesculi	7
Gynosporanium rusts	Gymnosporangium spp.	15
Helminthosporium leaf spot	Helminthosporium spp.	10
hemlock needle rust	Pucciniastrum vaccinii	1
hemlock rust	Melampsora farlowii	2
Herpotrichia fungi	Herpotrichia spp.	3
Impatiens Necrotic Spot Virus	Tospovirus INSV	15
ink spot leaf blight	Ciborinia whetzelii	5
iris leaf spot	Davidiella macrospora	8
Japanese pear rust	Gymnosporangium asiaticum	6
Japanese pear scab	Venturia nashicola	3
juniper blight	Cercospora sequoiae junipera	1
juniper broom rust	Gymnosporangium speciosum	3
juniper-pear rust	Gymnosporangium sabinae	3
larch needle cast	Hypodermella laricis	9
large-spored spruce-laborador tea/needle rust	Chrysomyxa ledicola	3
late blight	Phytophthora infestans	84
leaf and flower gall	Exobasidium vaccinii	8
leaf blight (Isariopsis leaf spot)	Mycosphaerella personata	1
leaf blister of birch	Taphrina betulina	6
leaf blister of maple	Taphrina sacchari	2
leaf blister of poplar	Taphrina populina	3
leaf curl	Taphrina communis	7
leaf mold	Articularia quercina	2
leaf mold	Passalora fulva	5
leaf roll		1
leaf scorches		7
leaf spot	Ceratobasidium stevensii	2
leaf spot	Marssonia spp.	1
leaf spot	Mycosphaerella alocasiae	1
leaf spot	Mycosphaerella maculiformis	3
leaf spot	Passalora sequoiae	16
leaf spot	Stemphylium spp.	1
leaf spot or scorch	Septoria azalea	2
leaf streak/black chaff	Xanthomonas translucens pv. translucens	3
Leptosphaerulina leaf blight	Leptosphaerulina trifolii	2
lime witches’ broom phytoplasma	Candidatus Phytoplasma aurantifolia	3
lodgepole pine needle cast	Lophodermella concolor	8
Lophodermium needle casts	Lophodermium spp.	9
mal secco	Phoma tracheiphila	3
Marssonina blight of poplar	Marssonina populi	4
Marssonina leaf spot	Marssonina juglandis	4
Marssonina leaf spot	Marssonina salicicola	3
Marssonina leaf spot	Marssonina tiliae	1
Marssonina leaf spot	Marssonina tremulae	4
Marssonina leaf spots	Marssonina spp.	1
Medusa needle blight	Davisomycella medusa	5
Melampsora leaf rust	Melampsora laricis-populina	3
Melampsora rusts	Melampsora spp.	6
melanose	Diaporthe citri	1
mosaic viruses (general)		47
mountain ash juniper rust	Gymnosporangium cornutum	4
mycelial neck rot	Botrytis tulipae	3
Mycosphaerella leaf spot	Mycosphaerella citri	1
Mycosphaerella leaf spot	Mycosphaerella microsora	2
needle blight of cedar	Didymascella thujina	4
needle blight of hemlock	Fabrella tsugae	1
needle blight of larch	Meria laricis	8
needle cast	Bifusella linearis	1
needle cast	Bifusella saccata	3
needle cast	Lophodermium seditiosum	2
needle cast	Virgella robusta	2
needle cast of Japanese larch	Mycosphaerella laricis-leptolepidis	1
needle rust	Coleosporium senecionis	2
needle rust	Coleosporium tussilaginis	1
needle rust	Pucciniastrum goeppertianum	2
needlecast	Davisomycella attenuata	1
needlecast	Lophodermella montivaga	2
needlecast	Meloderma desmazieri	3
needlecast	Stigmina deflectens	5
needlecasts	Davisomycella spp.	2
northern corn leaf blight	Exserohilum turcicum	37
oak anthracnose	Apiognomonia errabunda	28
oak leaf blister	Taphrina caerulescens	26
oat crown rust	Puccinia coronata var. avenae	3
oat stem rust	Puccinia graminis f.sp. avenae	3
onion rust	Puccinia allii	15
onion smudge	Colletotrichum circinans	1
orange rust	Arthuriomyces peckianus	3
pasmo disease of linseed	Mycosphaerella linicola	1
Peach Latent Mosaic Viroid	Pelamoviroid PLMVd	3
peach leaf curl	Taphrina deformans	13
Peach Rosette Mosaic Virus	Nepovirus PRMV	2
peach scab	Venturia carpophila	6
Peach X-disease	Phytoplasma	4
Peanut Stunt Virus	Cucumovirus PSV	1
pear decline phytoplasma	Candidatus Phytoplasma pyri	11
pecan scab	Cladosporium caryigenum	19
peony leaf blotch	Cladosporium paeoniae	1
Pestalotiopsis leaf spot	Pestalotiopsis palmarum	2
Pestalotiopsis leaf spot	Pestalotiopsis spp.	7
Phacidium fungus	Phacidium coniferarum	5
Philippine downy mildew	Peronosclerospora philippinensis	4
Phoma blight	Phoma destructiva	1
Phoma blight	Phoma exigua var. exigua	3
Phoma blight	Phoma macdonaldii	3
Phoma blights	Phoma spp.	4
Phomopsis cane and leaf spot	Phomopsis viticola	7
Phomopsis leaf blight and fruit rot	Phomopsis longicolla	3
Phyllosticta leaf spots	Phyllosticta spp.	13
Phytophthora basal canker	Phytophthora palmivora	8
pine needle cast	Lophodermella cerina	19
pine needle cast	Lophodermium nitens	2
pine needle cast	Lophodermium pinastri	31
pine needle rust	Coleosporium asterum	7
pine needle rusts	Coleosporium spp.	18
pink snow mold	Microdochium nivale	3
Pleuroceras fungus	Pleuroceras pseudoplatani	1
Ploioderma needle cast of pine	Ploioderma lethale	3
poplar rust	Melampsora medusae	7
potato deforming rust	Aecidium cantensis	1
Potato Mop Top Virus	Carlavirus PMTV	1
potato stolbur phytoplasma	Phytoplasma SMLO	2
Potato Yellow Dwarf Virus	Nucleorhabdovirus PYDV	3
powdery mildew	Blumeria graminis	5
powdery mildew	Erysiphe betae	29
powdery mildew	Erysiphe cichoracearum	10
powdery mildew	Erysiphe diffusa	10
powdery mildew	Erysiphe flexuosa	2
powdery mildew	Erysiphe lagerstroemiae	6
powdery mildew	Erysiphe necator	6
powdery mildew	Erysiphe palczewskii	2
powdery mildew	Erysiphe pisi	2
powdery mildew	Erysiphe pulchra	1
powdery mildew	Erysiphe spp.	6
powdery mildew	Erysiphe syringae	2
powdery mildew	Golovinomyces cichoracearum	4
powdery mildew	Leveillula taurica	8
powdery mildew	Microsphaera abbreviata	1
powdery mildew	Microsphaera penicillata	8
powdery mildew	Oidium ipomoeae	1
powdery mildew	Oidium murrayae	1
powdery mildew	Oidium spp.	18
powdery mildew	Phyllactinia fraxini	2
powdery mildew	Phyllactinia guttata	4
powdery mildew	Phyllactinia moricola	1
powdery mildew	Phyllactinia spp.	2
powdery mildew	Podosphaera fuliginea	33
powdery mildew	Podosphaera leucotricha	7
powdery mildew	Podosphaera macularis	56
powdery mildew	Podosphaera pannosa	1
powdery mildew	Podosphaera spp.	2
powdery mildew	Podosphaera xanthii	28
powdery mildew	Sawadaea tulasnei	1
powdery mildew	Sphaerotheca phytoptophila	5
powdery mildew of oak	Microsphaera alphitoides	22
powdery mildews		6
Pseudocercospora leaf spot	Pseudocercospora kalmiae	1
puccinia rust	Puccinia carduorum	1
puccinia rusts	Puccinia spp.	3
puffy fruit		2
purple blotch	Alternaria porri	27
Pyracantha scab	Spilocaea pyracanthae	1
red belt abiotic damage		7
Rhabdocline needlecast	Rhabdocline weirii	2
Rhabdocline needlecasts	Rhabdocline spp.	6
Rhizosphaera needle cast	Rhizosphaera kalkhoffii	19
rose rust	Phragmidium mucronatum	10
Rostratum leaf spot	Exserohilum rostratum	2
rush skeletonweed rust	Puccinia chondrillina	9
rust	Cerotelium fici	3
rust	Puccinia aristidae	14
rust	Puccinia punctiformis	3
rust	Tranzschelia discolor	2
rust	Uromyces dianthi	1
rusts		6
safflower rust	Puccinia calcitrapae var. centaureae	1
Satsuma Dwarf Virus	Sadwavirus SDV	5
scab	Cladosporium cucumerinum	4
Septoria leaf spot	Septoria chrysanthemi	1
Septoria leaf spot	Septoria cornicola	2
Septoria leaf spot	Septoria glycines	12
Septoria leaf spot	Septoria pisi	10
Septoria leaf spot and canker	Septoria musiva	4
Septoria leaf spot and canker	Septoria populicola	1
Septoria leaf spot and cankers	Septoria spp.	11
Septoria leaf spot of wheat	Septoria tritici	6
sharp eyespot	Ceratobasidium cereale	3
shepherd's crook leaf and shoot blight	Venturia populina	2
shepherd's crook leaf and shoot blight	Venturia tremulae	12
Sirococcus blight of conifers	Sirococcus conigenus	68
snow mold	Typhula incarnata	4
snow molds	Typhula spp.	3
sooty blotch	Gloeodes pomigena	2
Southern corn leaf blight and stalk rot	Bipolaris maydis	6
Southern corn rust	Puccinia polysora	1
soybean rust	Phakopsora pachyrhizi	41
spot anthracnose	Elsinoe corni	8
spring dead spot	Ophiosphaerella korrae	14
spruce needle cast	Lophodermium piceae	3
spruce needle cast/blight	Lirula macrospora	14
spruce needle rust	Chrysomyxa weirii	1
Squash Leaf Curl Virus	Bigeminivirus SLCV	4
Stemphylium leaf blight and stalk rot	Stemphylium vesicarium	8
Stemphylium leaf spot	Stemphylium botryosum	8
Stigmina fungus	Wilsonomyces carpophilus	7
Stigmina leaf spot	Cercospora mangiferae	1
Strawberry Crinkle Virus	Cytorhabdovirus SCrV	1
strawberry leaf spot	Mycosphaerella fragariae	9
stripe rust	Puccinia striiformis	34
summer patch	Magnaporthe poae	6
Swiss needle cast	Phaeocryptopus gaeumannii	8
sycamore anthracnose	Apiognomonia veneta	14
take-all root rot	Gaeumannomyces graminis var. tritici	5
tan spot	Pyrenophora tritici-repentis	6
Taphrina flower fungus	Taphrina johansonii	1
tar spot	Rhytisma americanum	2
tar spot	Rhytisma punctatum	2
tar spot	Rhytisma salicinum	1
tar spot needlecast	Davisomycella ampla	7
tar spot of maple	Rhytisma acerinum	12
tar spots	Rhytisma spp.	1
Tomato Black Ring Virus	Nepovirus TBRV	3
Tomato Ringspot Virus	Nepovirus ToRSV	10
tracheomycosis		2
twist rust	Melampsora populnea	2
Venturia leaf scabs and blights	Venturia spp.	1
Volutella blight of pachysandra	Volutella pachysandricola	2
walnut anthracnose	Gnomonia leptostyla	4
web blotch of peanut	Phoma arachidicola	1
wheat leaf rust	Puccinia recondita	15
wheat stem rust	Puccinia graminis	26
white leaf spot	Cercospora brassicicola	2
White Leaf Spot	Pseudocercosporella albida	2
White Leaf Streak of Rice	Mycovellosiella oryzae	1
white pine needlecast	Lophodermella arcuata	3
willow rust	Melampsora salicina	3
willow scab	Venturia saliciperda	1
witches broom rust	Gymnosporangium nelsonii	3
Xanthomonas leaf blight of onion	Xanthomonas axonopodis pv. allii	58
yellow leaf blotch	Pseudopeziza jonesii	1
zonate leaf spot	Grovesinia pyramidalis	4