Yep. Macadamias are native to my area, and are a forest tree, although commercial orchard trees bear little resemblance to the natives. Commercial trees are hybrids bred (propagated) for yield and nut size. My particular trees were bred in Hawaii - another significant macadamia growing area - and their commercial designation is H246. Most trees planted today in Australia are "A" varieties bred locally. The "A"s have a much shorter lead in time - around 5 years till significant yields, whereas the "H" varieties are around 10-15 years before they really produce nut.