Ordered by quantity

SpeciesPartQuantityReference
Carya glabra (MILLER) SWEET -- Pignut Hickory Shoot 1,100 ppm DUKE1992A
Lactuca sativa L. -- Lettuce Leaf 974 ppm DUKE1992A
Aloe vera (L.) BURM. f. -- Aloe, Bitter Aloes Leaf 770 ppm DUKE1992A
Coptis chinensis FRANCH. -- Chinese Goldthread, Huang-Lian, Huang-Lien Rhizome 600 ppm DUKE1992A
Coptis japonica (THUNB.) MAKINO -- Huang-Lia, Huang-Lian, Huang-Lien, Japanese Goldthread Rhizome 600 ppm DUKE1992A
Coptis spp -- Generic Goldthread Rhizome 600 ppm DUKE1992A
Valerianella radicata Plant 572-701 ppm USDA(GRANDFORKS)-UNPUBLISHED
Carya ovata (MILL.) K. KOCH -- Shagbark Hickory Shoot 342 ppm DUKE1992A
Juniperus virginiana L. -- Red Cedar Shoot 317 ppm DUKE1992A
Liquidambar styraciflua L. -- American Styrax, Sweetgum Stem 240 ppm DUKE1992A
Prunus serotina subsp. serotina -- Black Cherry, Wild Cherry Stem 216 ppm DUKE1992A
Rhus glabra L. -- Smooth Sumac Stem 208 ppm DUKE1992A
Prunus serotina subsp. serotina -- Black Cherry, Wild Cherry Leaf 192 ppm DUKE1992A
Spinacia oleracea L. -- Spinach Plant 185 ppm DUKE1992A
Quercus alba L. -- White Oak Stem 182 ppm DUKE1992A
Petroselinum crispum (MILLER) NYMAN EX A. W. HILLL -- Parsley Plant 164 ppm DUKE1992A
Diospyros virginiana L. -- American Persimmon Stem 162 ppm DUKE1992A
Brassica oleracea var. gemmifera var. gemmifera DC -- Brussel-Sprout, Brussels-Sprouts Leaf 157 ppm DUKE1992A
Brassica oleracea var. viridis l. L. -- Collards, Cow Cabbage, Spring-Heading Cabbage, Tall Kale, Tree Kale Leaf 157 ppm DUKE1992A
Cucumis sativus L. -- Cucumber Fruit 157 ppm DUKE1992A
Lagenaria siceraria (MOLINA) STANDLEY. -- Calabash Gourd, White-Flowered Gourd Fruit 157 ppm DUKE1992A
Anethum graveolens L. -- Dill, Garden Dill Plant 150 ppm DUKE1992A
Phaseolus vulgaris subsp. var. vulgaris -- Black Bean, Dwarf Bean, Field Bean, Flageolet Bean, French Bean, Garden Bean, Green Bean, Haricot, Haricot Bean, Haricot Vert, Kidney Bean, Navy Bean, Pop Bean, Popping Bean, Snap Bean, String Bean, Wax Bean Fruit 150 ppm DUKE1992A
Cichorium endivia L. -- Endive, Escarole Leaf 146 ppm DUKE1992A
Quercus rubra L. -- Northern Red Oak Stem 138 ppm DUKE1992A
Sassafras albidum (NUTT.) NEES -- Sassafras Stem 136 ppm DUKE1992A
Nyssa sylvatica MARSHALL -- Black Gum, Black Tupelo Stem 132 ppm DUKE1992A
Prunus domestica L. -- Plum Fruit 131 ppm DUKE1992A
Papaver somniferum L. -- Opium Poppy, Poppyseed Poppy Seed 130 ppm DUKE1992A
Rhus copallina L. -- Dwarf Sumac, Winged Sumac Stem 128 ppm DUKE1992A
Asparagus officinalis L. -- Asparagus Shoot 124 ppm DUKE1992A
Lycopersicon esculentum MILLER -- Tomato Fruit 120 ppm DUKE1992A
Brassica oleracea var. botrytis l. var. botrytis L. -- Cauliflower Leaf 118 ppm DUKE1992A
Panax quinquefolius L. -- American Ginseng, Ginseng Plant 114 ppm DUKE1992A
Abelmoschus manihot (L.) MEDIK. -- Manioc Hibiscus Leaf 108 ppm DUKE1992A
Amaranthus sp. -- Pigweed Leaf 108 ppm DUKE1992A
Sesamum indicum L. -- Ajonjoli (Sp.), Beni, Benneseed, Sesame, Sesamo (Sp.) Seed 102 ppm DUKE1992A
Phaseolus lunatus L. -- Butter Bean, Lima Bean Seed 100 ppm DUKE1992A
Liquidambar styraciflua L. -- American Styrax, Sweetgum Leaf 98 ppm DUKE1992A
Brassica oleracea var. botrytis l. var. botrytis L. -- Cauliflower Flower 97 ppm DUKE1992A
Rhus copallina L. -- Dwarf Sumac, Winged Sumac Leaf 96 ppm DUKE1992A