Host Plants - Westcott's Plant Disease - page 640

also root and stem rot, CA, CT, NY, OR, WA;
F. equiseti, AR, CT; F. acuminatum, CT;
F. graminearum, CT; F. avenaceum, CT;
Phytophthora cactorum, AZ; P. nicotianae,
NC; Pythium ultimum, CA; Rhizopus
stolonifer, general in storage after injury;
Sclerotinia sclerotiorum, ID, MA, ME, NH,
NY, WA; Trichothecium roseum, pink mold,
MA; Phoma subvelata, also leaf spot, stem
rot, TX.
R OT , Root. Phymatotrichum omnivorum, TX;
Rhizoctonia solani, TX.
S CAB ; Leaf Spot; Storage Rot. Cladosporium
cucumerinum, CT, MD, MA, NJ, NY, OR,
WA.
V IRUS . Bromegrass Mosaic. General, IA, SD on
squash ( Cucurbita pepa ); Lettuce
Mosaic, NY; Squash Mosaic, CA, SD;
Southern Squash Mosaic; Cucumber
Mosaic; Beet Curly Top; Tobacco Ring
Spot; Prunus Ring Spot; Watermelon
Mosaic; Zucchini Yellow Mosaic, AR, CA,
CT, FL, LA, NJ, NY, OH, SC; Squash Leaf
Curl, CA; Lettuce Infectious Yellows, AZ,
CA, TX; Cucurbit Leaf Curl, AZ, FL, TX,
Mexico; Beet Pseudo Yellows, CA; Potato
Leaf Roll, Pacific Northwest; Cucurbit Yel-
low Stunting, AZ, Mexico.
W ILT . Fusarium oxysporum f. sp. niveum, CA,
IL, MI, WI; Verticillium albo-atrum, OR.
W ILT , Anasa. Feeding injury from the squash bug.
In general, diseases and control measures are
the same as for cucumbers. Some squash varieties
are injured by sulfur dusts. Acorn and butternut
squashes are resistant to bacterial wilt.

Stachys (Betony, Hedgenettle,
Woundwort)

G ALL , Leaf. Synchytrium stachydis, LA.
L EAF S POT . Cercospora stachydis, IA, ME;
Cylindrosporium stachydis,IL;Ovularia
bullata,CA;Phyllosticta decidua, MA, WI;
P. palustris, IL, OH; Ramularia stachydis,
OR; Septoria stachydis,CA,IL,MS,NY,WI.
N EMATODE , Root Knot. Meloidogyne sp.
P OWDERY M ILDEW . Erysiphe galeopsidis
( Golovinomyces cichoracearum ), OH to CO,
MT, NY to IN, WI; Sphaerotheca macularis,
CA.
R UST . Puccinia pallidissima, TX.
V IRUS . Tomato Spotted Wilt, GA.

Staphylea (Bladdernut)

B LIGHT , Twig. Hypomyces ipomoeae, MA;
Coryneum microstictum,MA.
L EAF S POT . Mycosphaerella staphylina, GA,
KS. Ovularia isarioides, NY to MO, IA;
Septoria cirrhosa, MO.

Starbur, Bristly (Acanthospermum)

V IRUS . Tomato Spotted Wilt, GA.

Starflower (Trientalis)

Squash-Bush (Condalia)

G ALL , Leaf. Synchytrium aureum, PA.
L EAF S POT . Cylindrosporium magnusianum,
CA, MA, MI, NY, WI; Septoria increscens,
CA, ME, MI, NY, VT, WI; Phytophthora
ramorum, CA.
R OT , Leaf. Ceratobasidium anceps, WI.
R UST . Puccinia caricina var. limosae (0, I), AK,
NY, WI; II, III on Carex .
S MUT , Leaf and Stem. Tuburcinia trientalis,
OR, WA.

M ISTLETOE . Phoradendron californicum, CA.

Squaw-Apple (Peraphyllum)

L EAF S POT . Septoria peraphylli, UT.
R UST . Gymnosporangium inconspicuum (0, I),
CO; III on juniper; G. nelsonii (0, I), on
leaves, fruit; CO, UT.