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Common Names of Plant Diseases
Diseases of Azalea
(Rhododendron spp.)
D. M. Benson, primary collator (last update 4/8/03)
FUNGAL DISEASES
- Anthracnose
- Glomerella cingulata
(Stoneman) Spauld. & H. Schrenk
- Colletotrichum gloeosporioides (Penz.)
Penz. & Sacc.
- in Penz. [anamorph]
- Armillaria root rot (shoestring root rot)
- Armillaria mellea
(Vahl: Fr.) P. Kumm.
- Rhizomorpha subcorticalis Pers. [anamorph]
- Botrytis petal blight
- Botrytis cinerea
Pers.: Fr.
- Botryotinia fuckeliana (de Bary) Whetzel
[teleomorph]
- Bud and twig blight
- Pycnostysanus azaleae
(Peck) E. Mason
- =
Briosia azaleae (Peck) Dearn.
- Cercospora leaf spot
- Pseudocercospora handelii
(Bubak) Deighton
- =
Cercospora handelii Bubak
- Clitocybe root rot (mushroom root rot)
- Armillaria tabescens
(Scop.) Dennis et al.
- =
Clitocybe tabescens (Scop.) Bres.
- Cylindrocladium blight and root rot
- Cylindrocladium scoparium
Morg.
- =
C. floridanum Sobers & C. P. Seymour
- Calonectria kyotensis Terashita
[teleomorph]
- Cylindrocladium theae
(Petch) Subramanian
- Calonectria theae C. A. Loos [teleomorph]
- Damping-off, Pythium
- Pythium
spp.
- P. irregulare
Buisman
- Damping-off, Rhizoctonia
- Rhizoctonia solani
Kühn
- Thanatephorus cucumeris (A. B. Frank) Donk
- [teleomorph]
- Exobasidium leaf spot
- Exobasidium burtii
Zeller
- Leaf scorch
- Septoria azalea
Voglino
- Leaf and flower gall
- Exobasidium vaccinii
(Fuckel) Woronin
- =
E. azaleae Peck
- Ovulinia petal blight
- Ovulinia azaleae
Weiss
- Ovulitis azaleae Buchwald [anamorph]
- Pestalotia leaf spot twig blight, and crown rot
- Pestalotiopsis sydowiana
(Bres.) Sutton
- = Pestalotia rhododendri Guba non Westend., hom. illeg.
- Phomopsis dieback
- Phomopsis
spp.
- Phyllosticta leaf spot
- Phyllosticta
spp.
- Phytophthora blight and dieback
- Phytophthora nicotianae
Breda de Haan var. parasitica
- (Dastur) G. M. Waterhouse
- =
P. parasitica Dastur
- Phytophthora root rot and wilt
- Phytophthora cinnamomi
Rands
- P. nicotianae
Breda de Haan var. parasitica (Dastur)
- G.
M. Waterhouse
- Powdery mildew
- Erysiphe polygoni
DC.
- Microsphaera penicillata
(Wallr.:Fr.) Lev.
- Pucciniastrum leaf rust
- Pucciniastrum vaccinii
(G. Wint.) Jorst.
- Twig blight
- Monilinia azaleae
Honey
- Web blight
- Rhizoctonia ramicola
G. F. Weber & D. A. Roberts
- Ceratobasidium ramicola Tu et al.
[teleomorph]
- Rhizoctonia
sp. (binucleate)
NEMATODE DISEASES
- Dagger, American
- Xiphinema americanum
Cobb
- Pin
- Paratylenchus curvitatus
Springer
- Root-knot
- Meloidogyne
spp.
- Sheath
- Hemicycliophora
spp.
- Spiral
- Rotylenchus buxophilus
Golden
- R. robustus
(De Man) Filipjev
- Stubby-root
- Paratrichodorus minor
(Colbran) Siddiqi
- Stunt
- Tylenchorhynchus claytoni
Steiner
PARASITIC HIGHER PLANTS
- Dodder
- Cuscuta gronovii
Willd.
UNDETERMINED ETIOLOGY
- Witches' broom
- Undetermined
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