Host Plants - Westcott's Plant Disease - page 532

L EAF S POT . Discosia artocreas, secondary, IA;
Septoria hepaticae, MI, NC.
R UST . Tranzschelia pruni-spinosae (0, I), MA to
MD, TN, MN; II, III on wild plum.
S MUT , Leaf and Stem. Urocystis anemones,NY
to IN, MO, MN, WI.

G ALL , Leaf. Synchytrium papillatum, AZ, CA,
OR, TX.
R OT , Root. Rhizoctonia solani, TX.
V IRUS . Beet Curly Top, CA; Filaree Red Leaf,
CA.

Hesperis (Dames-Rocket)

Heracleum (Cow-Parsnip)

C LUB R OOT . Plasmodiophora brassicae, NJ.
D OWNY M ILDEW . Peronospora parasitica, NY,
PA.
V IRUS . Cucumber Mosaic, OR.
W HITE R UST ;WhiteBlister.Albugo candida,NY.

L EAF S POT . Cylindrosporium heraclei, CA, CO,
ID, MT, ND, TX, UT, WA, WY; Fusicladium
angelicae, WI; Phyllosticta heraclei, AK,
OR, TX; Ramularia heraclei, general.
R OT ,Root.Phymatotrichum omnivorum,TX.

Heuchera (Alum-Root, Coral-Bells)

Hercules-Club (Aralia spinosa)

L EAF N EMATODE . Aphelenchoides fragariae,

C ANKER ;D IEBACK . Botryosphaeria ribis, GA,
VA, WV; Nectria cinnabarina, VA, WV.
L EAF S POT . Cercospora atromaculans, LA, TX;
Phyllosticta araliae, TX; P. everhartii, TX,
WV; Stagonospora sp., WV.
R OT , Root. Phymatotrichum omnivorum, TX;
Rhizoctonia solani, TX.
R OT , Sapwood. Polyporus tulipiferae,MD.
S POT A NTHRACNOSE . Sphaceloma araliae,MD,
MO.

CA.
L EAF S POT . Cercospora heucherae, IL, IN, IA,
OH, PA, VA, WV, WI; Phyllosticta
excavata, AK, ID; Ramularia mitellae var.
heucherae, WA; Septoria heucherae, IN.
P OWDERY M ILDEW . Golovinomyces
cichoracearum, CA; Sphaerotheca
macularis, MT, NM; Phyllactinia corylea,
MT.
R OT , Root. Phytophthora cinnamomi, NC;
Pythium hypogynum and P. ultimum.
R UST . Puccinia heucherae (III), PA to NC, AK,
SD, western states.
S MUT , Leaf and Stem. Urocystis lithophragmae,
UT.
V IRUS . Tobacco Rattle, MA, MI, MN.

Hercules-Club (Zanthoxylum clava-
herculis)

L EAF S POT . Cercospora xanthoxyli, FL, GA, TX;
Septoria pachyspora, TX.
M ISTLETOE . Phoradendron serotinum

Hibbertia (Guinea-Gold-Vine)

(flavescens), TX.
R UST . Puccinia andropogonis var. xanthoxyli
(0, I) FL, TX: II, III on Andropogon . V IRUS . Cucumber Mosaic, CA, SC.

Heronsbill (Erodium) Hibiscus (Arborescent Forms)

(Rose-of-Sharon, Confederate-Rose,
Chinese Hibiscus, Kenaf) B ACTERIAL , MLO. California Aster Yellows.

B LIGHT , Southern. Sclerotium rolfsii, TX.
D OWNY M ILDEW . Pseudoperonospora erodii,
MT, TX.

B ACTERIAL Crown Gall. Agrobacterium

tumefaciens, MS.