Host Plants - Westcott's Plant Disease - page 569

Mock-Orange (Philadelphus) Monardella

B ACTERIAL Blight. Pseudomonas syringae, L EAF S POT . Phyllosticta monardellae, CA.

R UST . Puccinia menthae (0, I, II, III), CA, NV,
NM, OR, UT.

MN.
B LIGHT , Flower and Shoot. Botrytis cinerea,
cosmopolitan.
B LOTCH , Sooty, Sarcinella heterospora, FL.
L EAF S POT . Ascochyta philadelphi, NY;
Cercospora angulata, MO, TX; Ramularia
philadelphi, TX, WA; Septoria philadelphi,
ID, IA, MT.
N EMATODE , Root Knot. Meloidogyne sp.
P OWDERY M ILDEW . Phyllactinia corylea, GA,
MT, WA.
R OT , Root. Phymatotrichum omnivorum,
TX.
R UST . Gymnosporangium speciosum (0, I), CO,
NM, UT; III on juniper.

Moneses (Wood-Nymph)

R UST . Chrysomyxa pirolata (II, III). AK, CO,
ME, MI, MT, NM, WA, WY; 0, I on spruce.

Monkshood, Aconite (Aconitum)

B ACTERIAL Leaf Spot. Pseudomonas delphinii,
ME, NJ.
D OWNY M ILDEW . Plasmopora pygmaea, AK.
N EMATODE , Root Knot. Meloidogyne

sp.,

NY, VT.
P OWDERY M ILDEW . Erysiphe polygoni, NY, TX,
WV.
R OT , Root. Phymatotrichum omnivorum, TX;
Rhizoctonia solani, CT, NJ.
R OT , Stem. Sclerotinia sclerotiorum, CO; Scle-
rotium rolfsii, CT, DE, MN, NJ, NY.
R UST . Puccinia recondita (0, I), CO, AK; II, III
on grasses; Uromyces lycoctoni (0, I, II, III),
CA, CO, TX, UT, WY.
S MUT , Leaf and Stem. Urocystis carcinodes, UT;
U. sorosporioides, UT.
V IRUS . Mosaic, Unidentified, NY.
W ILT , Verticillium albo-atrum, MA, NJ,
NY, OH.
Verticillium wilt is doubtless more widespread
in monkshood than the official reports indicate.
The leaves dry along the stem, flowers are poor,
and when the stem is cut across, blackened bundles
are readily seen. The clumps do not die immedi-
ately but decline over a period of years.

Mock-Strawberry (Duchesnea)

D OWNY M ILDEW . Peronospora potentillae, NC.
G ALL , Leaf. Synchytrium globosum, SC.
L EAF S POT . Pezizella oenotherae, VA.
R UST . Frommeella duchesneae (0, I, II, III),
NH to FL, KY; Frommeella duchesneae,
IN.

Monarda (Horse-Mint, Bee-Balm)

B LIGHT , Southern. Sclerotium rolfsii, TX.
G ALL , Leaf. Synchytrium holwayi, IA, WI.
L EAF S POT . Cercospora sp., OK; Phyllosticta
decidua, KS, NE, OK, TX, WI;
P. monardae, KS; Ramularia brevipes,
AL, TX.
P OWDERY M ILDEW . Golovinomyces

cichoracearum, general.
R UST . Puccinia angustata (0, I), NE, WI;
P. menthae (0, I, II, III), general from ME to
MS. ID, TX, P. monardae.
V IRUS . Mosaic. Unidentified, IN; Tomato Spot-
ted Wilt, PA.

Monkshood Vine (Ampelopsis
aconitifolia)

D IEBACK . Tubercularia nigricans, NH, TX.
N EMATODE , Dagger. Xiphinema index.