The name would be Endiandra palmerstonii. Family: Lauracae.
Juglans regia
The scientific name for black walnut is Juglans nigra.
Walnut is the common name, Juglans is the scientific name, see link below.
Juglans regia
The name would be Lovoa trichilioides. Family: Meliaceae.
The name would be Juglans regia. Family: Juglandaceae.
Juglansnigra, I found it on http://faculty.ucc.edu/biology-ombrello/POW/black_walnut.htm
If you mean the Butternut tree ther are two. One is Juglans cinerea of the walnut family. There is also Caryocar nuciferum a Brazillian tree with hard durable timber.
The scientific name would be Aleurites trisperma.
The accepted scientific name is Datana integerrima.
The accepted scientific name is Laothoe juglandis.
The accepted scientific name is Citheronia regalis.