The macadamia Arabic name is called المكاديميا.

They are considered toxic to dogs

No. The macadamia nut is not a legume.

Yes it was originally called the Bauple or Bopple nut and still is locally after the town of Bauple South of Maryborough

There are 6 species native to eastern Australia Macadamia whelani, Macadamia ternifolia, Macadamia integrifolia, Macadamia tetraphylla, Macadamia prealta and Macadamia heyana. there are also other species native to Celebes and New Caledonia.

Macadamia nuts are low in purines.