mandarin orange tree italian tangerine plant Citrus deliciosa Ten. Citrus × deliciosa (thorny (Australia) amarillo, beladi, Willowleaf Mandarin, Mediterranean Mandarin) is a citrus hybrid (mandarin × pumelo), though it was once thought to be a pure mandarin. It is related to the ponkan. Its sweet fruit is eaten, its rind oil is used to flavour food and drinks, and petitgrain oil is extracted from the pruned leaves. [https://en.wikipedia.org/wiki/Citrus_×_deliciosa] citrus deliciosa mediterranean mandarin willow-leaf mandarin requires discussion