The tree grows up to 20 feet (6 metres) tall. It has thorns and produces purple blossoms.
The skin is a reddish-orange, with a small nipple opposite to the end where the stem was. Inside, the fruit is very juicy, with 8 to 10 segments, and anywhere from 6 to 18 green seeds.
The sour taste is like something between tangerine and lemon. You can use its tartness in places where you would use a lemon. For instance, you can make a Rangpur Lime Curd instead of a Lemon Curd, or make a marmalade with Rangpur Limes instead of using bitter oranges. Such marmalade is, in fact, quite good.
Originated in India, probably as the result of a cross between a lemon and an orange. Brought to Florida 1887.