Host Plants - Westcott's Plant Disease - page 623

B LIGHT . Botrytis cinerea; Rhizoctonia sp.,
NM.
L EAF S POT . Alternaria spp., AZ, CA, IN, MT,
NE, ND; Septoria carthami, IN, TX;
Stemphylium sp., FL; Cercospora beticola,
MT.; Ramularia carthami, Ramularia
cercosphaelloides, Sonora, Mexico.
P OWDERY

Ruellia

B LIGHT , Southern. Sclerotium rolfsii, LA.
L EAF S POT . Cercospora consociata, AL, IL, IA,
MS, MO.
R OT , Root. Phymatotrichum omnivorum,TX.
R UST . Puccinia lateripes (0, I, II, III), MD to FL,
KS, MO, TX; Uromyces ruelliae (0, I, II, III),
TX.

M ILDEW . Golovinomyces

cichoracearum, CA.
R OT , Root. Phytophthora drechsleri, CA.
R OT , Stem; Wilt. Sclerotinia sclerotiorum, IN,
ND, VA.
R UST . Puccinia carthami (II, III), CO, MA, MT,
NE, ND.
V IRUS . Cucumber Mosaic, AZ, CA; Turnip
Mosaic, CA.
W ILT . Fusarium oxysporum f. sp.

Rumex (Garden Sorrel)

B ACTERIAL , MLO. California Aster Yellows,
CA.
G ALL , Leaf. Synchytrium anomalum, IA.
L EAF S POT . Cercospora acetosellae, LA, TX;
Phyllosticta sp., NY; Gloeosporium rumicis,
NY, TX; Septoria pleosporioides, TX.
N EMATODE ,Ring.Criconemella xenoplax,SC.
N EMATODE , Root Knot. Meloidogyne sp., FL.
R OT , Root. Rhizoctonia solani, TX.
R UST . Puccinia acetosae (II, III), ME to FL.
V IRUS . Tomato Ringspot, PA.

carthami;

Verticillium albo-atrum.

Sage (Salvia) (Includes Blue, Clary,
Sauceleaf, Scarlet, Black Ornamental
Forms)

B ACTERIAL , MLO. California Aster Yellows,
CA.
B LIGHT , Southern. Sclerotium rolfsii, IL.
D AMPING -O FF . Pythium debaryanum, OH; Rhi-
zoctonia solani, CT, IL, NJ, OH.
D OWNY M ILDEW . Peronospora lamii, IA, LA;
P. swinglei, KS.
L EAF S POT . Cercospora salviicola, OK, TX;
Ramularia salviicola, OK; Myrothecium
roridum, FL.
N EMATODE , Leaf. Aphelenchoides fragariae,
DE, NJ.
N EMATODE , Root Knot. Meloidogyne spp., AZ,
NJ; M. javanica.
P OWDERY

Russian Knapweed (Acroptilon repens)

L EAF S POT . Cercosporella acroptili, MT.
R UST . Puccinia acroptili, CO, MT, WY.

Russian-Olive, Silverberry (Elaeagnus)

C ANKER . Fusicoccum elaeagni, IL, MO.

Rutabaga

M ILDEW . Golovinomyces

Turnip. cichoracearum, CA.

R OT , Charcoal. Macrophomina phaseoli, SC.
R OT , Root. Fusarium oxysporum, NC;
Phytophthora dreschleri; P. parasitica,
NC; Phymatotrichum omnivorum, TX;
Stem, Sphaeropsis salviae, MS.
R OT , Root and Crown. Phytophthora cryptogea,
CA.

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Safflower (Carthamus)

A NTHRACNOSE ; Blight. Gloeosporium carthami,
IN, TX, VA.
B ACTERIAL Blight. Pseudomonas syringae, CA.