Host Plants - Westcott's Plant Disease - page 470

D ODDER . Cuscuta sp.
D OWNY M ILDEW . Bremia lactucae, CA;
Plasmopara halstedii, IA, TX.
N EMATODE , Root Knot. Meloidogyne

Cephalotaxus (Japanese Plum-Yew)

sp., CA, B LIGHT , Nursery. Phomopsis juniperovora, NY.

FL, OH.
P OWDERY M ILDEW . Golovinomyces

Cestrum cichoracearum, CA, CT.

R OT , Root. Phymatotrichum omnivorum, TX;
Pythium sp.; Rhizoctonia solani, IL, IN, NJ,
NY, TX.
R OT , Stem. Sclerotinia sclerotiorum, CA,
IN, MS, MO, TX; Phytophthora cactorum,
NY.
R UST . Puccinia cyani (0, I, III), MA to NC, CA,
IN, OR, WA; P. irrequiseta (II, III), TX; 0,1,
unknown; P. jaceae var. diffusa; P. acroptili,
NM; P. jaceae var. solstitiales, CA.
V IRUS . Tomato Spotted Wilt, PA.
W HITE R UST . Albugo tragopogonis, TX.
W ILT . Verticillium albo-atrum, NY.
W ILT , Stem Rot. Fusarium oxysporum f. sp.
callistephi, MI.

B ACTERIAL Canker, Vascular. Clavibacter
michiganense,WY.

Chaerophyllum

B ROOMRAPE . Orobanche ramosa, TX.

Chamaecyparis (Atlantic White-Cedar,
Port Orford White-Cedar, Alaska
Yellow-Cedar, Hinoki Cypress, Sawara
Cypress-Retinospora)

B ACTERIAL Crown Gall. Agrobacterium

tumefaciens, CA.
B LIGHT , Nursery. Phomopsis Centipede Grass (Eremochloa) juniperovora,

widespread.
B LIGHT , Tip. Pestalotia funerea, MI, NJ, TX;
Didymascella chamaecy-parissi, NY.
C ANKER , Bark Patch. Aleurodiscus nivosus,NJ.
N EMATODE . Sphaeronema sp., AK; Crossonema
sp., AK.
N ONPARASITIC . Scorch. Sun, freezing, drought,
mites.
R OT , Collar and Root. Phytophthora lateralis,
CA, OR, WA, serious; P. cinnamomi.
R OT , Heart. Fomes pini, occasional; F. pinicola,
AK; F. subroseus, NJ, NC.
R OT , Root. Armillaria mellea, VA; Clitocybe
tabescens, FL; Phymatotrichum
omnivorum, TX; Pythium ultimum, CA;
Phytophthora lateralis, CA.
R OT , Wood. Lenzites saepiaria,VA;Poria spp.;
Polyporus spp.; Steccherinum balloui, NJ;
Trametes isabellina, CA; Fomes annosus.
R UST , Gall. Gymnosporangium biseptatum
(III), ME, NH to NJ, AL; 0, I on service-
berry; G. nootkatense (III), AK, OR, WA;
0,

A NTHRACNOSE . Colletotrichum graminicola, FL;
C. sublineola, MS.
L EAF M OLD . Curvularia sp., LA; Stachybotrys
sp., MD.
R OT ,R OOT . Gaeumannomyces graminis, GA.

Century Plant (Agave)

A NTHRACNOSE . Glomerella cingulata

( Colletotrichum agaves ) occasional.
B LIGHT , Gray Mold. Botrytis cinerea, after
chilling.
L EAF S CORCH ; Blight. Stagonospora gigantea,
NM, TX.
L EAF S POT . Coniothyrium concentricum,
C. agaves, common.
L EAF S POT , Black Patch. Dothidella parryi, CA.
L EAF S POT , Black Rot. Thielaviopsis paradoxa,
Mexico.
L EAF S POT , Red Leaf Ring, Pantoea ananatis,
Mexico. I on crabapple, pear, mountain-ash;