Biology Reference
In-Depth Information
Strawberry-Tree (Arbutus unedo)
Styrax (Snowbell)
B ACTERIAL
Crown
Gall.
Agrobacterium
L EAF S POT . Mycosphaerella punctiformis, GA.
N EMATODE , Root Knot. Meloidogyne sp., MD.
tumefaciens, CA.
L EAF S POT . Septoria unedonis, OR.
S POT A NTHRACNOSE . Elsino¨ mattirolianum, CA.
Stylosanthes
Strawflower (Helichrysum)
L EAF S POT , Canker. Colletotrichum dematium f.
sp. truncata, FL.
B ACTERIAL , MLO. Aster Yellows, eastern and
central states; California Aster Yellows, CA.
D OWNY M ILDEW . Plasmopara halstedii, CA;
Bremia lactucae, CA.
N EMATODE , Root Knot. Meloidogyne sp., FL.
R OT , Stem. Fusarium sp., FL.
V IRUS . Beet Curly Top, CA, OR, WA; Bidens
Mottle, FL; Tomato Spotted Wilt, PA.
W ILT . Verticillium albo-atrum, CA.
Sugar Beet (Beta vulgaris)
P OWDERY M ILDEW . Erysiphe polyoni,ND.
R OT , Stalk and Blight. Fusarium solani, CA,
Pacific Coast.
Y ELLOWS . Fusarium Yellows; Fusarium
oxysporum, MI; F. sulphureum, MN.
Streptanthera
Sumac (Rhus)
V IRUS . Iris Mosaic, CA, OR.
C ANKER , Stem; D IEBACK . Botryosphaeria ribis,
“umbrella disease,” NY to GA, MN, NE;
Cryptodiaporthe aculeans, ME to AL, IA,
OK; Nectria cinnabarina, NY, OK;
N. galligena, NY, PA, VA; Physalospora
obtusa, canker, inflorescence blight, NY to
AL, KS, MI.
D ODDER . Cuscuta exaltata, TX.
L EAF B LISTER . Taphrina purpurascens,MAto
GA, KS, TX.
L EAF S POT . Cercospora rhoina, general;
Pezizella oenotherae, NY to GA, WV;
Coniothyrium rhois, TX; Harknessia
rhoina, CA; Phyllosticta rhoiseda, CA;
Septoria rhoina, general; Cylindrosporium
sp., CO, NE.
M OLD , Leaf. Cladosporium aromaticum, IA,
NE, NY, WI, WV.
P ARASITIC
Streptocarpus
V IRUS . Tobacco Mosaic, CA, CT, DC, FL, OH,
WA; Tomato Spotted Wilt, PA.
Streptopus (Twisted-Stalk)
L EAF S POT . Cercospora streptopi,WA;Septoria
streptopidis, MT.
R UST . Puccinia sessilis (0, I), NY.
S MUT , Leaf. Tuburcinia clintoniae, WI.
V IRUS . Mosaic, AK.
Strophostyles (Wild Bean)
L ICHEN .
Strigula
elegans
and
S. complanata, LA, Southern U.S.
P OWDERY M ILDEW . Sphaerotheca macularis,
widespread; Oidium sp., WI.
R OT , Root. Armillaria mellea, CA; Clitocybe
tabescens,
V IRUS . Alfalfa Mosaic, AR; Chlorotic
Mottle, AR; Cowpea Chlorotic Mottle, AR;
Quail Pea Mosaic, AR; Soybean Mosaic,
AR.
FL;
Corticium galactinum,
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