Host Plants - Westcott's Plant Disease - page 626

L EAF S POT . Cercospora gonolobi, OK; Septoria
sp., LA.
R UST . Puccinia obliqua (III), OK, TX.

R OT ,Root.Phymatotrichum omnivorum,TX.
R UST . Scopella ( Uredo ) sapotae (II), FL.
S POT A NTHRACNOSE . Elsino¨ lepagei, FL.

Sandwort (Arenaria) Sassafras

L EAF S POT . Hendersonia tenella, TX.
P OWDERY M ILDEW . Erysiphe polygoni, CA.
R OT ,Root.Phymatotrichum omnivorum,TX.
R UST . Puccinia arenariae (III), CA, FL, MT,
NY, TX, WI; P. tardissima, CO, NM, UT,
WY; Uromyces inaequialtus

C ANKER , Branch, Trunk. Nectria sp., CT to WV,
MS.
C ANKER ;D IEBACK . Physalospora obtusa,NYto
GA.
L EAF S POT . Septoria sp., NY; Actinothyrium
gloeosporioides ( Actinopella dryina );
Cristulariella pyramidalis; Phyllosticta
illinoiensis, IL, MA; P. sassafras,NYto
GA, TX, IL.
M ISTLETOE .

(0, I, II, III),

CO, UT.
S MUT , Anther. Ustilago violacea, ME, NH, NY,
VT.

Phoradendron serotinum

(flavescens), TX.
P OWDERY M ILDEW . Phyllactinia corylea, MI.
R OT , Heart, Trunk. Daedalea confragosa, IN,
NY; Fomes igniarius, OH, VA; F. ribis, MO.
R OT ,

Sanguisorba (Burnet)

L EAF S POT . Graphium sessile, NY; Ovularia
bulbigera, AK, IL.
P OWDERY M ILDEW . Podosphaera oxyacanthae,
IA; Sphaerotheca macularis, AK, KS, NY,
PA.
R UST . Xenodochus carbonarius (I, III), AK; X.
minor, AK.

Root. Armillaria mellea, PA;

Phymatotrichum omnivorum, TX.
R OT , Wood. Daldinia vernicosa;
Hymenochaete agglutinans; Hypoxylon
spp.; Polyporus spp., sometimes on living
trees; Poria ferruginosa;Schizophyllum
commune, NY; Trametes sepium, IN.
V IRUS . Mosaic, NY; Yellows, TX, unidentified.
W ILT ,Laurel.Raffaelea lauricola,FL,MS,SC.
The undetermined yellows disease causes fas-
ciation of tops, leafroll, and dwarfing of leaves.

Sansevieria (Bowstring-Hemp, Snake
Plant)

B ACTERIAL Soft Rot. Erwinia aroideae and
E. carotovora, AZ, FL, MD, NJ.
L EAF S POT . Fusarium moniliforme, FL, MO,
WA; Gloeosporium sansevieriae, FL, WA.
N EMATODE , Lesion. Pratylenchus sp., CA.
N EMATODE , Root Knot. Meloidogyne

Saururus (Swamp-Lily, Water Dragon)

G ALL , Leaf. Physoderma sp., VA.
L EAF S POT . Cercospora saururi, AL, FL, IL, IN,
LA, NY, TX; Ramularia saururi, OK.
N EMATODE , Root Knot. Meloidogyne sp.

sp.;

M. javanica.
N ONPARASITIC . Wilt. Overfertilization or toxic salts.
R OT . Aspergillus niger; Fusarium sp.

Saxifrage (Saxifraga)

Sapodilla (Achras)

B LIGHT , Gray Mold. Botrytis cinerea, AK.
L EAF S POT . Cercosporella saxifragae, WI;
Phyllosticta saxifragarum,WY;Septoria
albicans, WI; Ramularia sp., AK.

G ALL , Limb. Pestalotia scirrofaciens, FL, TX.
L EAF S POT . Phyllosticta sp., FL; Septoria sp.,
FL.