Biology Reference
In-Depth Information
Pleurotus spp.; Polyporus spp.;
Schizophyllum commune, cosmopolitan.
R UST . Melampsora ableti-capraearum
( M. epitea ) (II, III), general except far North;
0, I on fir; M. arctica (II, III), AK, CO, NH;
M. epitea,MN;M. paradoxa ( M. bigelowii )
(II, III), ME to NC, AK, IA, NM; 0, I on larch;
M. ribesii-purpureae (II, III), MT to CO,
AK, CA; 0, I on Ribes .
S CAB , Gray; Blight. Fusicladium saliciperdum
( Venturia chlorospora ), New England to NJ,
NC, PA.
S OOTY M OLD . Capnodium sp.
S POT
B LOTCH , Sooty. Gloeodes pomigena, WI.
F RUIT S POT , Black Speck. Leptothyrium pomi,
WI.
L EAF S POT . Cercospora gaultheriae, NY, WI;
Pezizella oenotherae, VA; Discosia
maculicola, secondary; Mycosphaerella
gaultheriae, ME to MD, WV; Phyllosticta
gaultheriae, general; Schizothyrium
gaultheriae, ME to VA, WI; Venturia
arctostaphyli, MD, MA, NJ, NY, VA.
P OWDERY M ILDEW . Microsphaera alni, WI.
A NTHRACNOSE ;
Scab.
Sphaceloma
Wintergreen, Waxflower
murrayae, CA, OR, WA, WI.
Willow scab, followed by black canker, forms
a very destructive blight, killing many trees in
New England.
Pipsissewa.
Winterberry (Ilex verticillata)
Wisteria (Wistaria)
L EAF S POT . Physalospora ilicis,NY.
L EAF S POT , Tar. Rhytisma concavum, WI;
R. prini, ME to MS, IL, WI.
P OWDERY M ILDEW . Microsphaera alni, WI.
B ACTERIAL
Crown
Gall.
Agrobacterium
tumefaciens, CT, MD, TX.
C ANKER , Stem. Nectria cinnabarina, CT.
L EAF S POT . Phyllosticta wistariae, MA, MO, NJ,
TX; Septoria wistariae, TX.
N EMATODE , Root Knot. Meloidogyne spp.
P OWDERY
Winter Cress (Barbarea)
M ILDEW .
Golovinomyces
cichoracearum, TX.
R OT , Heart. Pleurotus sp., WV.
R OT ,Root.Phymatotrichum omnivorum,TX.
V IRUS . Wisteria Vein Mosaic, MS, NY, TX;
Tobacco Mosaic, RI.
B ACTERIAL Black Rot. Xanthomonas barbareae,
NY.
B ACTERIAL , Yellows. Spiroplasma citri, IL.
D ODDER . Cuscuta gronovii, NY.
D OWNY M ILDEW . Peronospora parasitica, TX.
L EAF S POT . Cercospora barbarea, WI;
Ramularia barbareae, MA to NJ, OH, TX,
WI; Alternaria sp., PA.
R OT , Stem. Sclerotium rolfsii, TX.
V IRUS . Beet Curly Top; Potato Yellow Dwarf.
W HITE R UST . Albugo candida, CA, TX.
Witch-Hazel (Hamamelis)
B ACTERIAL
Crown
Gall.
Agrobacterium
tumefaciens,MD.
L EAF S POT . Discosia artocreas, OK;
Gonatobotryum maculicola,NHtoWV,
FL, WI; Graphium hamamelidis, NY to IN,
TN; Monochaetia desmazierii, VA to GA,
TN; Mycosphaerella sp., WV; Phyllosticta
hamamelidis, CT to MS, TN, WI; Ramularia
hamamelidis, NY to WV, OK, WI.
Wintergreen, Checkerberry
(Gaultheria procumbens)
A NTRACNOSE . Colletotrichum gloeosporioides,
British Columbia, Canada.
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