leafminer, leaf scorch, sunscald, webworms, wireworms, hoary cress, juglone, pythium, sclerotia, penicillium, andromeda, phytophthora, leafhoppers, chlorosis, flea beetle, nutgrass, stem canker, sumacs, downy mildew, meadowsweet, anthracnose, bagworm, greenfly, smartweed, root rot, foxtails, ixora, prunus, thrip, poison sumac, creeping charlie, goutweed, hackberries, parthenium, nutlets, nutsedge, johnsongrass, fungus, sclerotinia, pokeweed, spider mite, fusarium wilt, quack grass, groundsel, sphagnum, budworm, germander, phoma, tomato hornworm, sorghum bicolor, sweet woodruff, sow thistle, armillaria, fleabane, monarda, marsh marigold, frogeye, swamp milkweed, anise hyssop, cucurbit, burnet, erwinia, spatterdock, powdery mildew, mealybugs, vinca minor, loquat, goosegrass, tannic acid, chinch bug, henbit, cutworms, chinaberry, colchicum, cinnamon fern, xanthomonas, cabbage lettuce, deciduous holly, prussic acid, swallow wort, portulaca, pieris, eupatorium, asclepias, fall webworm, tansy ragwort, snowberry, verticillium, lygus, oxalis, lemon verbena, fungus gnat, cinnamon bark, dieffenbachia, muskmelons, bearberry, creeping thyme, stinging nettle, scurf, oriental bittersweet, jewelweed, monkshood, insects, rusts, agates, ants, aphides, flies, fungi, grasshoppers, leeches, marbles, moths, acacias, alternates, aphids, bees, blues, butterflies, cacti, caterpillars, colors

class pyrenomycetes, erysiphaceae, erysiphe, family erysiphaceae, family peronosporaceae, genus erysiphe, genus peronospora, peronospora, peronosporaceae, pyrenomycetes