The NAPCC encompasses a wide array of documented plant collections held by APGA institutions throughout North America. Collections include woody and herbaceous ornamentals found anywhere in the world. Many focus on a particular taxonomic group, such as palms, trillium, or elms. Several institutions may work together to represent the diversity of large plant groups like rhododendrons and maples. Others bring together species and cultivated varieties of economic crops like citrus. Still others concentrate on a floristic region. Here is a sampling of NAPCC Collections Profiles, taken from articles originally appearing APGA's publication, The Public Garden.