Host Plants - Westcott's Plant Disease - page 512

V IRUS . Beet Curly Top, CA; Mirabilis Mosaic,
IL.
W HITE R UST . Albugo platensis, TX.

Freeway Daisy (Osteospermum)

V IRUS . Lettuce Mosaic, CA.

Foxglove (Digitalis) Fremontia (Flannel Bush)

L EAF S POT . Ascochyta fremontiae, CA.
R OT ; Stem Girdle. Phytophthora cactorum,
CA.
R OT , Crown, Root. Phytophthora nicotianae
var. nicotianae, CA.
W ILT . Verticillium albo-atrum, CA.

A NTHRACNOSE . Colletotrichum fuscum, CT,
MA, OR, PA, WI.
B LIGHT , Leaf; Inflorescence. Alternaria sp., MD.
D OWNY M ILDEW . Peronospora digitalidis, CA.
L EAF S POT . Cladosporium sp., NJ; Phyllosticta
digitalis, AK, NY, TX; Ramularia

variabilis, OR.
N EMATODE , Leaf and Stem. Ditylenchus dipsaci,
CT.
N EMATODE , Root Knot. Meloidogyne spp., CA,
MD.
R OT , Root and Stem. Rhizoctonia solani, NJ;
Fusarium sp., CA, NH.
R OT , Stem; Wilt. Sclerotinia sclerotiorum, NY;
Sclerotium rolfsii, IN, NJ, TX.
V IRUS . Tobacco Mosaic, WI; Tomato Spotted
Wilt, PA; Tomato Spotted Wilt-Impatiens
Serotype, FL, GA.
W ILT . Fusarium sp., CA, NH; Verticillium
albo-atrum, NY.

Fringe-Tree (Chionanthus)

A NTHRACNOSE . Discola fraxinea, DE.
L EAF S POT . Cercospora chionanthi, NJ to NC,
WV; Phyllosticta chionanthi, NJ, WV;
Septoria chionanthi and S. eleospora, SC,
TX.
P OWDERY M ILDEW . Phyllactinia corylea, MD.
R OT , Root. Phymatotrichum omnivorum, TX.
R OT , Wood. Daedalea confragosa,MD.

Fritillaria

L EAF S POT . Phyllosticta fritillariae, CA.
R UST . Uromyces miurae (III), AK, WA.
V IRUS . Mosaic. Undetermined, NY.

Freesia

B ACTERIAL Scab. Pseudomonas marginata,
occasional in imported stock.
L EAF S POT . Heterosporium iridis, CT.
N EMATODE , Root Knot. Meloidogyne sp., CA.
R OT , Corm Wilt. Fusarium spp., including
F. oxysporum; F. solani, CA, FL, TX.
R OT , Dry. Stromatinia gladioli, NJ, NY. ROT.
Blue Mold. Penicillium gladioli.
R UST . Cause unknown, not true rust.
V IRUS . Iris Mosaic, CA; Bean Yellow Mosaic;
Freesia Sneak, VA.
Fusarium corm rot causes wilting and death.
Corms should be inspected before planting, and
all those showing pinkish lesions should be
discarded.

Froelichia

L EAF S POT . Cercospora crassoides, OK,

TX, WI.
N EMATODE , Root Knot. Meloidogyne sp., FL.
R OT , Root. Phymatotrichum omnivorum,
TX.
W HITE R UST . Albugo froelichiae, NE, TX.

Frostwort (Crocanthemum)

L EAF S POT . Cylindrosporium eminens, WI.