Biology Reference
In-Depth Information
N
ONPARASITIC
. Chlorosis. Soil alkalinity. Leaf
Scorch. Heat, drought.
P
OWDERY
M
ILDEW
. Microsphaera alni var.
vaccinii, MA to AL, IL, NE, TX; Phyllactinia
corylea, IL, IN, KY, MA, OH, SC, VA.
R
OT
, Root. Armillaria mellea, WA;
Helicobasidium
M
OLD
, Leaf. Cladosporium spp., general.
R
OT
, Culm. Ophiobolus sp., AR.
R
OT
, Leaf. Phythiogeton autossytum, OH;
Pythium helicoides, OH.
purpureum,
OH;
Cats-Claw (Doxantha)
Phymatotrichum
omnivorum,
TX;
Thielaviopsis basicola, of seedlings.
R
OT
, Wood. Collybia velutipes, IN; Polyporus
spp.; Schizophyllum commune; Stereum
spp.; Trametes sepium.
S
OOTY
M
OLD
. Capnodium axiliatum, LA, SC.
S
POT
A
NTHRACNOSE
. Sphaceloma sp.
W
ILT
. Verticillium albo-atrum, IL, IN, KS, MA,
NJ, NY, OH, VA.
Leaf spots may cause some defoliation in
a wet season, but many years the expense of
spraying may be unjustified on a limited budget.
Verticillium wilt kills street trees.
R
OT
, Root. Phymatotrichum omnivorum, TX.
Ceanothus
B
ACTERIAL
Crown
Gall.
Agrobacterium
tumefaciens,WA.
L
EAF
S
POT
. Cercospora ceanothi, KS, WI;
Septoria ceanothi,
ID; Cylindrosporium
ceanothi,
Pacific
Coast;
Phyllosticta
ceanothi, MS.
P
OWDERY
M
ILDEW
. Microsphaera
alni,
Catha (Arabian-Tea)
widespread.
R
OT
, Root. Armillaria mellea, CA.
R
OT
, Sapwood. Schizophyllum commune, CA.
R
UST
. Puccinia tripsaci (0, I), KS, NE, WI; II, III
on grasses.
W
ILT
. Verticillium albo-atrum, CA.
B
LIGHT
,
Leaf
Tip,
Colletotrichum
gloeosporioides, FL.
Catnip (Nepeta)
B
ACTERIAL
Leaf Spot. Pseudomonas tabaci, WI;
Xanthomonas campestris, CA.
B
LIGHT
, Gray Mold. Botrytis cinerea, AK.
B
LIGHT
, Southern. Sclerotium rolfsii, TX.
L
EAF
S
POT
. Ascochyta nepetae, WI; Cercospora
nepetae, IL, TX; Phyllosticta decidua, IL, NY,
OH, WI; Septoria alabamensis, AL;
Cedar (Cedrus spp.) (Atlas Cedar,
Deodar, Cedar of Lebanon)
C
ANKER
; D
IEBACK
.
Diplodia
pinea, AL;
Sirococcus conigenus, OR.
R
OT
, Heart. Fomes pini, occasional.
R
OT
, Root, Armillaria mellea, MS;
Clitocybe tabescens, FL; Phymatotrichum
omnivorum TX; Phytophthora cinnamomi,
CA.
S.
nepetae, WI.
R
OT
, Root. Rhizoctonia solani, TX.
V
IRUS
. Cucumber Mosaic, IN, IA, KS, MI, WI.
W
ILT
. Fusarium sp., GA.
Cat-Tail (Typha)
Celandine (Chelidonium)
L
EAF
S
POT
. Stagonospora typhoidearum, TX,
WI; Phyllosticta typhina, NE, NY, OR, TX,
WI; Scolecotrichum typhae, CO.
L
EAF
S
POT
. Septoria chelidonii, TX.
R
OT
, Root. Phymatotrichum omnivorum, TX.
