A
AbioticAbrasion
Abscission, Abscise
Air pollution injury
Alate
Albinism
Alga, algae
Algal leaf spot
Alligator skin
Angular leaf spot
Ant damage
Anthocyanescence
Anthracnose (flowers)
Anthracnose (fruit)
Anthracnose (leaf or stem)
Aphid
Aphid damage
Apothecium
Apterous
Ascus, ascospores
Atrophy
B
Bacterial cankerBacterial leaf blight
Bacterial spot
Bacterial streaming
Bacterial wilt
Bacterium, bacteria
Basidium, basidiospore
Biotroph
Blast, blasting, blasted
Bleached, bleaching
Bleeding
Blight
Blister
Blossom end rot
Bronzing
Bunchy top
Burl
C
CallusCanker
Canker (woody)
Carpellody
Cassytha filiformis
Caterpillar
Catface
Chlorosis, chlorotic
Coalesce
Coccinellids (lady beetles)
Collar rot
Conidium, conidia, conidiophore, conidiogenesis
Corky
Corm rot
Cracking
Curl, curling
D
Damping offDecay
Defoliation
Delphacids
Dieback
Disease, diseased
Dodder
Drought
Dwarf, dwarfing
E
End rotEtiolation
F
Facultative parasiteFairy rings
Fastidious prokaryotes
Feathery mottle
Flagging
Flocculent
Frass
Freckle
Fruit blight
Fruit rot
Fruit spot
Fungus, fungi
G
Gall mitesGall, galling
Girdle, girdling, girdled
Green islands
Gummosis
H
HaloHaustorium
Heart rot
Holonecrosis
Host
Hurricane damage, typhoon
Hydrosis (water soaking)
Hyperplasia, hyperplastic
Hypertrophy
Hypha
I
Immune, immunityInjury
Interveinal chlorosis
J
Juvenile reversionK
KatydidL
Lace bugLeaf blight
Leaf curling
Leaf miner
Leaf roll
Leaf spot
Lesion
Lichen
Lightning injury
M
Marginal chlorosis (leaves)Marginal leaf blight
Mealybugs
Mildew
Mistletoe
Mites
Mold
Morse code
Mosaic
Moss
Mottle
Mummy
Mushroom
Mycelium, mycelial fan
N
Necrosis, necroticNematode
O
OosporesP
ParasiteParasitic seed plants
Pathogenic, pathogens, pathogensis
Pathology
Perithecium
Pest
Phyllody
Phytoplasma
Phytotoxic, phytotoxicity
Pigs, boars
Plasmodial slime mold
Pod rot
Praying mantiss
Psylla, psyllid
Pucker
Puffballs
Q
QuiescenceR
Rat, ratsReversion
Ringspot
Root knot
Root rot
Rosette
Rot
Rugose, rugosity
Rust
S
ScabScale
Scar, scarring
Sclerotium, sclerotia
Scorch
Senescent spots
Septate
Shelf fungi
Shoestring
Shot hole
Shredding (tattering)
Slugs
Smut
Snails
Soft rot
Sooty mold
Sore shin
Souring beetle
Spiroplasmas
Split, splitting
Spore
Stain
Stalk rot
Stem end rot
Stippling, stippled
Streak, streaking
Stunting
Stylet
Sunburn
T
Tear-stainTermites
Topple, toppled, toppling
Twig borer
V
Variegated, variegationVascular necrosis
Vector
Vein clearing, veinal chlorosis
Veinal necrosis
Viroid
Virus, viruses
W
WeevilWhitelfies
Wilt
Windowing
Witches' broom
X
Xylem necrosisY
YellowingYellows