What is "rough lemon"

n. (taxlink Citrus jhambiri species noshow=1), a lemon with a rough skin and very sour pulp.

Rough lemon (Citrus jambhiri Lush.) is the fruit and the tree of a citrus hybrid related to the citron and the lemon, with character traits similar to rangpur or mandarin orange.

Rough lemon is a cold-hardy citrus and can grow into a large tree.

There are several cultivars of rough lemon that use as a citrus rootstock, among them are: florida, schaub, and Vangassay rough lemon.