Host Plants - Westcott's Plant Disease - page 655

agencies give warning when late blight is immi-
nent and it is time to start spraying. See

Tree-Poppy (Dendromecon)

USDA
Agricultural Handbook 203 for an excellent dis-
cussion of tomato diseases with fine illustrations.

▶

S MUT , Leaf. Entyloma eschscholtziae, CA.

Torenia Tree-Tomato (Cyphomandra)

N EMATODE , Root Knot. Meloidogyne sp., MD.
P OWDERY M ILDEW . Oidium sp., LA.

B ACTERIAL Canker. Clavibacter michiganense,
CA.
P OWDERY M ILDEW . Oidium sp., MD.

Torreya

Trefoil, Birdsfoot (Lotus)

L EAF S POT . Phomopsis sp; Diaporthe,
Lasiodiplodia, Hypoxylon, Fuarium spp.
Botryosphaeria obtuca, FL, GA.
N EEDLE S POT . Fusarium lateritium, FL.
N EEDLE S POT ,C ANKER S TEM . Pestalotiopsis
microspora, FL.

D ECAY ; Rot. Root, Stem. Mycoleptodiscus
terrestris, DE, WI.
L EAF S POT . Cercospora zebrina (clover isolate),
NC.
R UST . Uromyces sp., PA, rust pustules were col-
onized by Sphaerellopsis filum.

Tradescantia (Wandering Jew,
Spiderwort) Trillium (Wake-Robin)

B LIGHT , Gray Mold. Botrytis cinerea, AK.
L EAF S POT . Cladochytrium replicatum, NY,
secondary; Colletotrichum sp., NJ, TX;
Cylindrosporium

B LIGHT , Leaf. Ciborinia trillii.
B LIGHT ,

Tuber Storage Rot. Sclerotinia

sclerotiorum, LA.
L EAF S POT . Colletotrichum peckii,NYto
NC, IL, MN; Gloeosporium trillii, CA,
OR, WA; Heterosporium trillii, WA;
Phyllosticta trillii, NY, PA, WA, WI;
Septoria trillii, New England to OK, SC, WI.
R OT , Stem. Sclerotium rolfsii, NH, PA.
R UST . Uromyces halstedii (0, I), IL, NY; II, III on
Spartina .
S MUT , Leaf. Urocystis trillii, ID, OR.

tradescantiae, IA;

Septoria tradescantiae, WI to TX, SD.
N EMATODE , Root Knot. Meloidogyne

sp.,

OR, TX.
R UST . Uromyces commelinae (II, III), TX.
V IRUS . Tomato Spotted Wilt, PA; Tradescantia
zebrina,MN.

Trautvetteria (False Bugbane)

Tritonia (Montbretia)

D OWNY M ILDEW . Peronospora ficariae, TN.
L EAF S POT . Septoria trautveteriae,WV.
R UST . Puccinia pulsatillae, ID, OR, WA.
S MUT ,LeafandStem.Urocystis anemones,UT.

B LIGHT , Leaf. Alternaria sp., secondary, NH;
Heterosporium sp., OR, WA.