Description

Macadamia Nuts

The leaves are arranged in whorls of three to six, lanceolate to obovate or elliptic in shape, 60300 mm (210 in) long and 30130 mm (15 in) broad, with an entire or spiny-serrated margin. The flowers are produced in a long, slender, simple raceme 50300 mm (210 in) long, the individual flowers 1015 mm (0.40.6 in) long, white to pink or purple, with four tepals. The fruit is a hard, woody, globose follicle with a pointed apex, containing one or two seeds. The nutshell ("coat") is particularly tough and requires around 2000 N to crack. The shell material is 5 times harder than hazelnut shells and has mechanical properties similar to aluminum