Long pepper

Long pepper (Piper longum), sometimes called Indian long pepper (pipli), is a flowering vine in the family Piperaceae, cultivated for its fruit, which is usually dried and used as a spice and seasoning. Long pepper has a taste similar to, but hotter than, that of its close relative Piper nigrum - from which black, green and white pepper are obtained.
The fruit of the pepper consists of many minuscule fruits — each about the size of a poppy seed — embedded in the surface of a flower spike that closely resembles a hazel tree catkin. Like Piper nigrum, the fruits contain the alkaloid piperine, which contributes to their pungency.