Juglans nigra


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An eastern US tree, the bark of which contains iodine and tannins; it is analgesic, anthelmintic, antifungal, antiseptic, and laxative. It has been used internally for constipation, intestinal parasites, and oral ulcers, and topically for acne, athlete’s foot, eczema, fever blisters, jock itch, and psoriasis

Juglans nigra

shavings of the wood of this North American tree in the family Juglandaceae contain a toxin juglone; used as bedding, have caused edema of the lower limbs and laminitis in horses. Called also black walnut.
References in periodicals archive ?
Ethanol extracts of barks of Carya ovata, Quercus rubra, Acer saccharum, Juglans nigra and Sassafras albidum all inhibited seed germination of Rhus radicans (Tukey hsd multiple comparisons; Table 4).
Our extracts of the barks of Juglans nigra and Sassafras albidum, however, inhibited germination and seedling growth, respectively, relative to bark extract of Carya ovata.
Fraxinus pennsylvanica, Juglans nigra, Celtis occidentalis, Aesculus glabra and Ulmus rubra, were typical of moist lowland woodland sites.
The southern-most portion of this area contains more moisture and supports larger trees, mainly Juglans nigra with some Quercus rubra.
Other trees typical of floodplains, including Fraxinus pennsylvanica, Juglans nigra, Aeseulus glabra, and Acer negundo, were relatively unimportant, having RIVs equal to or lower than 5.
Caloplaca ulmorum (Fink) Fink Rare at the base of Juglans nigra (#1023) at a cemetery.
Candelaria concolor (Dickson) Stein Common on a variety of substrates including a fiberglass boat frame, cloth, painted aluminum fencing (#2080), weathered concrete, granite and wood, and on the limbs and trunks of several species of trees including Acer saccharum (#980), Juglans nigra (#1031), Quercus alba (#1008) and Ulmus rubra (#994).
Juglans nigra also did not differ significantly in mean values for any of the variables between stands.
And a third theory attributes the trees to a grafting of Juglans regia onto the root stock of Juglans nigra," Frye said.
The species native to the United States is Juglans nigra.