|List of Trees 61-90||
Poncirus trifoliata (L.) Raf.
This shrub or small tree is also called "Bitter Orange" or "Chinese Bitter Orange" because of its origin (China and Korea) and its acrid properties. It was brought to this area by settlers who planted it as a "hedge". The sharp thorns prevented livestock from passing through the barriers created by the shrub. The plant is also more hardy than most citrus plants and has been used as rootstock for grafting other citrus branches.