The orange tree (Citrus aurantium) is a member of the citrus family, and is one of the most popular fruits worldwide. In the United States, oranges are used primarily for eating and producing juice. However, other countries have other uses for them. In Afghanistan, oranges are a seasoning used for cutting grease, and in Jamaica, people clean their floors with a freshly cut orange.
Observe the overall height of the tree. An orange tree reaches an average size of 25 feet high and 15 feet wide.
Pick a leaf from the tree and smell it. Orange tree leaves have a sweet, acidic scent.
Pick a flower from the tree. An orange blossom will have five white, oblong petals and be very fragrant. Use a magnifying glass to look at the stamens. Count the number of stamens. An orange tree blossom has between 20 and 25 stamens with conspicuous anthers.
Pick a piece of fruit from the tree. Oranges are orange-colored with thick skins. When the skin is peeled away, there will be yellow-orange pulp inside the fruit that is very juicy.