Host Plants - Westcott's Plant Disease - page 519

V IRUS . Tomato Spotted Wilt, CA, MO, NC, TX;
Tobacco Mosaic, CA, CT, DC, FL, OH, WA;
Impatiens Necrotic Spot, NC.

Golden-Chain (Laburnum)

B LIGHT , Twig. Gibberella baccata, NJ; Fusar-
ium sp., MD, OH.
C ANKER , Stem. Diplodia mutila, OH.
L EAF S POT . Cercospora laburni,OK.

Gnaphalium (Cudweed)

B ACTERIAL , MLO. California Aster Yellows;
C ANKER , Stem. Phoma erysiphoides, TX, WI.
D OWNY M ILDEW . Golden-Club (Orontium) Plasmopara halstedii,

AL, MS.
L EAF S POT . Cercospora gnaphaliacea, KS, MS;
Cylindrosporium gnaphalicola, AL, TX;
Septoria cercosperma, TX.
N EMATODE , Root Knot. Meloidogyne sp.
R OT , Root. Phymatotrichum omnivorum, TX.
R UST . Puccinia gnaphaliicola (II, III), AL, LA,
NC, SC; 0, I unknown; P. investita (0, I, III),
AZ, CA, CT, MA, NY, OH, PA, TN, VT, WV,
WI.
S MUT , White.

B LIGHT , Leaf. Botrytis streptothrix, NJ.
L EAF S POT . Mycosphaerella sp., NJ; Phyllosticta
orontii, NJ, TX; Ramularia orontii, NJ;
Volutella diaphana, NJ.

Golden-Eye (Viguiera)

P OWDERY M ILDEW . Golovinomyces

Entyloma compositarum, cichoracearum, UT.

R OT , Root. Phymatotrichum omnivorum, TX;
Helicobasidium purpureum, TX.
R UST .

AL, MD.
V IRUS . Beet Curly Top, CA; Tomato Spotted
Wilt, GA. Puccinia abrupta (II, III) AZ, TX;

P. tumidipes (II, III), AZ, CA.
S MUT , White. Entyloma compositarum, UT.

Goats-Beard (Aruncus)

Golden-Glow (Rudbeckia lacinata) L EAF S POT . Cercospora sp., OR; Ramularia

ulmariae, AK.

B ACTERIAL , MLO. Aster Yellows; California
Aster Yellows.
B LIGHT , Southern. Sclerotium rolfsii, FL.
D OWNY M ILDEW . Plasmopara halstedii, IA, NE,
NC, ND, WI.
G ALL , Leaf. Synchytrium aureum, IL, WI.
L EAF S POT . Cercospora rudbeckiae, NY;
Phyllosticta rudbeckiae, IA, NY, WI;
Ramularia rudbeckiae, VT to MS, CO and
ID; Septoria rudbeckiae, KS, NE, WI.
P OWDERY

Godetia

B ACTERIAL , MLO. California Aster Yellows,
CA.
B LIGHT , Gray Mold. Botrytis cinerea, AK.
D AMPING -O FF . Rhizoctonia solani, IL.
D OWNY M ILDEW . Peronospora arthuri, CA.
N EMATODE , Root Knot. Meloidogyne sp.
R OT , Root. Pythium ultimum, MO;
Phytophthora cryptogea.
R UST . Puccinia oenotherae (0, I, II, III);
P. pulverulenta (0, I, II, III), CA;
Pucciniastrum epilobii (II, III), AK; 0, I on
fir.
V IRUS . Tomato Spotted Wilt, CA.

M ILDEW . Golovinomyces

cichoracearum, general.
R OT , Stem. Sclerotinia sclerotiorum, CT.
R UST . Puccinia dioicae (0, I), MO, SD;
Uromyces perigynius (0, I), MD to MO,
MT; II, III on Carex ; U. rudbeckiae (III),

MD to MS, NM, MT.