leafminer, prussic acid, leaf scorch, chlorosis, rootlets, terpenes, oxalates, poison sumac, tannic acid, tansy, gallic acid, mildews, coltsfoot, endophyte, johnsongrass, webworm, staghorn sumac, frass, blister rust, andromeda, cambium, goosegrass, gingerol, solanine, cyanogenic, cornus mas, saponins, poison hemlock, cankers, erwinia, jimsonweed, petty spurge, chokeberries, nutsedge, sumacs, deadly nightshade, abscission, alkaloids, ixora, drupes, sclerotia, sunscald, goldenrods, urushiol, hackberries, crucifers, cotyledons, armillaria, sawfly, whiteflies, xylan, cow parsnip, sphagnum, nutlets, monocots, henbit, phytophthora, sapwood, hyphae, mealybugs, epiphytes, honeysuckles, vinca minor, fall webworm, spider mite, dieffenbachia, penicillium, suberin, nightshades, stinging nettle, luteolin, sow thistle, red osier dogwood, sericea, yaupon, bearberry, hoary cress, sweet woodruff, bagworm, bay laurel, tansy ragwort, phosphite, vaccinium, budworm, amygdalin, hickories, silky dogwood, siberian elm, parthenium, pythium, oxalic acid, pokeweed, liverwort, anthracnose, mycorrhiza, highbush cranberry, serrata, comfrey, fungi, pueraria, zelkova, albus