Host Plants - Westcott's Plant Disease - page 460

L EAF S POT , Black. Diplotheca sp., TX.
R OT , Root. Phymatotrichum omnivorum, TX;
Stem, Aspergillus alliaceus, TX.

R OT ,Stem.Sclerotinia sclerotiorum,NY,WA.
V IRUS . Tomato Spotted Wilt, CA.
W ILT . Verticillium albo-atrum, NY, WA.

Caesalpinia Calendula (Pot Marigold)

A NTHRACNOSE . Gloeosporium sp., FL.
B ACTERIAL

B ACTERIAL , MLO. Aster Yellows, CT, DE,
ME, NJ, PA, VA; California Aster
Yellows, CA.
B LIGHT , Gray Mold. Botrytis cinerea, AK, MO,
NJ, NY.
B LIGHT , Southern. Sclerotium rolfsii, TX.
L EAF S POT . Alternaria sp., NY; Cercospora
calendulae, PA, TX, VA; Colletotrichum
gloeosporioides, VA.
N EMATODE , Root Knot. Meloidogyne spp., TN,
TX, WV; M. javanica.
P OWDERY M ILDEW . Golovinomyces
cichoracearum, CA, NY; Erysiphe polygoni,
PA.
R OT , Root. Rhizoctonia solani, IN, NJ, NC, TX;
Pythium ultimum, CA; Phymatotrichum
omnivorum, TX.
R OT , Stem; Wilt. Sclerotinia sclerotiorum, CA,
FL, LA, MO, OH, TX.
R UST . Puccinia flaveriae (III), IL, IN, IA, KS,
MO, NE, TX.
S MUT , White. Entyloma calendulae, CA, NH,
OR; E. compositarum, WA.
V IRUS . Cucumber Mosaic, Tomato Spotted
Wilt, CA, MI, TX; Bidens Mottle, FL.

Crown Gall. Agrobacterium

tumefaciens, FL.
C ANKER ;D IEBACK . Botryosphaeria ribis var.
chromogena, FL, TX.
R OT , Root. Clitocybe tabescens, FL;

Phymatotrichum omnivorum, TX.
R UST . Ravenelia humphreyana (II, III), FL.

Caladium

B ACTERIAL Soft Rot. Erwinia carotovora, FL.
B LIGHT , Southern. Sclerotium rolfsii, FL.
B LIGHT ; Tuber Rot. Botrytis ricini, FL.
L EAF S POT . Gloeosporium thuemenii, FL.
N EMATODE , Citrus. Tylenchulus semipenetrans,
FL.
N EMATODE , Lesion. Pratylenchus sp., FL.
N EMATODE , Root Knot. Meloidogyne sp., FL,
MS; M. javanica.
R OT , Tuber. Fusarium solani, FL.

Calathea

L EAF S POT . Glomerella cincta, NJ; Phyllosticta
sp.; Alternaria alternata, FL; Drechslera
setariae, FL.
N EMATODE , Burrowing. Radopholus similis, FL.
Spiral, Helicotylenchus nannus.

Calibrachoa (Calibrachoa sp.)

V IRUS . Calibrachoa Mottle, CA; Tobacco Mild
Green Mosaic, MS.

Calceolaria (Slipperwort) California-Bluebell (Phacelia)

B LIGHT , Gray Mold. Botrytis cinerea, AK.
N EMATODE , Leaf. Aphelenchoides fragariae.
N ONPARASITIC . Boron Deficiency, leaf necrosis,
CA.
R OT , Root. Pythium mastophorum and
P. ultimum, CA.

L EAF S POT . Cylindrosporium phaceliae,
MT, TX.
P OWDERY M ILDEW . Golovinomyces
cichoracearum, CA, MT, NM, TX.
R UST . Puccinia aristidae (0, I); II, III on wild
grasses; P. phaceliae (III); P. recondita (0, I),