Piper nigrum - Photo of leaves and fruit. Piper nigrum - Image of leaf margin and fruit. Piper geniculatum - Photograph of the plant. Piper betel - Short description and medicinal uses of the betel plant, a climbing shrub which is indigenous throughout the Indian Malay region and is cultivated in other tropical regions. Piper aduncum: Matico - Description and several photographs of this shrubby tree, with information on its herbal properties, uses in traditional medicine, the chemicals it contains, its biological activities, clinical research and its current uses. Piper nigrum: Black Pepper - Photographs of the cultivation of this vine and its fruits. Kava - Information from Wikipedia on Piper methysticum, an ancient crop of the western Pacific and used as a herbal medicine. Plant Cultures: Black Pepper - A profile of Piper nigrum, with information on its history, production and trade, medicinal, food and other uses. Pepper (Piper nigrum L.) - Detailed description of black pepper and its uses, with images.