Host Plants - Westcott's Plant Disease - page 520

S MUT , White. Entyloma compositarum, IA, general; 0, I on 2-and 3-needle pines; Puccinia

dioicae (0, I), general; II, III on Carex ; Puccinia
virgae-aureae (III), IL, NH, MA, MI, NY;
P. grindeliae (III), IL, WI to CA, WA; P. stipae
(0, I), CO, MT, NE, NM, ND; II, III on Stipa ;
Uromyces perigynius (0, I), ME; II, III on
Carex ; U. solidaginis (III), CO, ID.
S MUT , Inflorescence. Thecaphora cuneata,KS.
S POT A NTHRACNOSE . Elsino¨ solidaginis, FL, GA,
SC.
V IRUS . Mosaic. Unidentified, NY; Tomato Spot-
ted Wilt, PA.

MO, OH, WI.
V IRUS . Potato Yellow Dwarf; Mosaic,
unidentified. Powdery mildew is commonly
present.

Golden-Larch (Pseudolarix)

C ANKER . Dasyscyphus willkommii, MA.

Goldenrain-Tree (Koelreuteria)

Goldenseal (Hydrastis)

C ANKER . Nectria cinnabarina, CA, CT.
L EAF S POT . Cercospora sp., FL.
R OT ,R OOT . Phymatotrichum omnivorum,TX.
W ILT . Verticillium sp., NJ.

B LIGHT , Leaf. Alternaria sp., MI, NY, OH;
Botrytis sp., CT to NC, IN, WA, WI.
N EMATODE , Root Knot. Meloidogyne spp., OH,
MI, WA.
R OT , Root. Phymatotrichum omnivorum, TX;
Rhizoctonia solani, NC.
R OT , Stem. Phytophthora cactorum, NC.
V IRUS . Mosaic. Unidentified, CT.
W ILT . Fusarium sp., IL, NY, OH, WA.

Goldenrod (Solidago)

B LACK K NOT . Gibberidea heliopsidis, CT, MO,
NY, ND.
B LIGHT , Thread. Pellicularia koleroga, LA.
C ANKER , Stem. Botryosphaeria ribis,IA.
D ODDER . Cuscuta spp., occasional.
D OWNY M ILDEW . Basidiophora entospora, IL,
WI; Plasmopara halstedii, IL, WI.
G ALL , Leaf. Rhodochytrium spilanthidis,LA.
L EAF S POT . Ascochyta compositarum, WI;
Asteroma solidaginis, black scurf;
Cercospora parvimaculans, WI;
Colletotrichum solitarium, KS, NE, WI;
Macrophoma sphaeropsispora;
Phyllosticta solidagni-cola, IL, WI;
Placosphaeria haydeni, black spot;
Ramularia serotina, CO, IL, TX, WI, WY;
Septoria spp.
M OLD , Leaf. Cladosporium astericola, WI.
N EMATODE , Lesion. Pratylenchus pratensis, FL.
P OWDERY M ILDEW . Golovinomyces
cichoracearum, general; Phyllactinia
corylea, WA; Sphaerotheca macularis, IN;
Uncinula sp., NY.
R OT ,Root.Phymatotrichum omnivorum,TX.
R UST . Coleosporium delicatulum (II, III), ME to
VA, KS; 0, I on pine; C. asterum (II, III),

Goldentop (Lamarckia)

R UST . Puccinia coronata (II, III), CA;

P. graminis, CA.
V IRUS . Mosaic, IA.

Goldthread (Coptis)

L EAF S POT . Mycosphaerella coptis, ME, NY,
VT; Septoria coptidis, ID, MI, NY, VT, WI,
WA; Phyllosticta helleboricola var. coptidis,
AK; Vermicularia coptina, NY.

Gopher Plant or Caper Spurge
(Euphorbia)

R OT , Root. Macrophomina phaseolina, AZ;
Pythium aphanidermatum, AZ; Rhizocto-
nia solani, AZ.