Crataegus

Sichuan Pepper: Zanthoxylum Sichuan Pepper: Zanthoxylum- Information on the spices prepared from plants of this genus with many photographs of flowers, foliage and seeds. Zanthoxylum simulans Zanthoxylum simulans- General information and classification. Zanthoxylum rhoifolium Zanthoxylum rhoifolium- Photographs of this tree. Zanthoxylum pimpinelloides Zanthoxylum pimpinelloides- Description of this spiny bush, with photographs of foliage, flowers and fruits. Zanthoxylum martinicense Zanthoxylum martinicense- Description of this spiny-trunked tree, with photographs of foliage, stems, flowers and bark.