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Black Walnut Toxicity - http://www.wvu.edu/~agexten/hortcult/fruits/blkwalnt.htm
Information from the West Virginia University Extension Service on this tree and its relationship to other plants growing nearby, many of which are affected by the toxic chemical juglane produced by it. |
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Juglans nigra (Black Walnut) - http://www.na.fs.fed.us/spfo/pubs/silvics_manual/volume_2/juglans/nigra.htm
Habitat, native range, associated forest cover, and detailed facts on reproduction and growth. Includes range map. |
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Juglans nigra - http://www.fs.fed.us/database/feis/plants/tree/jugnig/all.html
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. |
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Juglans nigra (Black Walnut) - http://www.cas.vanderbilt.edu/bioimages/species/juni.htm
Photos of entire tree, bark, twig, leaf, flower, and fruit. |
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Juglans nigra (Black Walnut) - https://fp.auburn.edu/sfws/samuelson/dendrology/juglandaceae_pg/black_walnut.htm
Images and description of this species. |