Atlantic and Gulf Coastal Plain Province The Atlantic and Gulf Coastal Plain Province is a strip of coastal plain, very narrow on the north, lying to the east and south of the Appalachian Province and stretching from the southernmost Nova Scotia through Georgia and Florida to eastern Texas, extending into the Mississippi Embayment up to the southern tip of Illinois. Due to Pleistocene inundations, most of its flora is much younger than that of the Appalachian province, but the degree of endemism is still high. The remaining wildland of the province is occupied mostly by temperate coniferous forests as well as temperate mixed forests dominated by pines (including such ecoregions as the Northeastern coastal forests, New England-Acadian forests, Atlantic coastal pine barrens). This province can be subdivided into smaller areas, most notably the gulf coastal plain and the Atlantic coastal plain. North American Prairies Province The North American Prairies Province is a large grassland floristic province lying between the Appalachian Province and the Rocky Mountains and including the prairies of the Great Plains. It is bounded by the Canadian coniferous forests on the north and the arid semideserts to the southwest. The province itself is occupied by temperate grasslands, savannas, and shrublands (including such ecoregions as the Flint Hills tall grasslands, Sand Hills, High Plains). Endemism is rather limited in this province, and its boundaries are vague. During the Pleistocene much of the province was glaciated. Endemic taxa Endemics of the Appalachian Province Families Genera Cymophyllus Galax Rugelia Diamorpha Amphianthus Jamesianthus Nestronia Rugelia Species and lower taxa Cardamine flagellifera Cardamine clematitis Convallaria majuscula Clematis albicoma Shortia galacifolia Pinus pungens Oncophorus raui Gymnocarpium appalachianum Cimicifuga americana Seymeria cassioides Pyrularia pubera Chrysogonum virginianum Liatris helleri Diphylleia cymosa Galium arkansanum Echinacea paradoxa Delphinium treleasei Scutellaria bushii Hamamelis vernalis Abies fraseri Picea rubens Magnolia fraseri Phlox buckleyi Trifolium virginicum Senecio antennariifolius Paxistima canbyi Endemics of the Atlantic and Gulf Coastal Plain Province Families Leitneriaceae Genera Balduina Ceratiola Dicerandra Franklinia Lachnanthes Macranthera Pinckneya Pleea Pyxidanthera Schwalbea Sclerolepis Stokesia Warea Zenobia Species and lower taxa Taxodium ascendens Magnolia macrophylla subsp. ashei Magnolia pyramidata Magnolia grandiflora Harperocallis flava Endemics of the North American Prairies Province Species and lower taxa Phlox oklahomensis Lespedeza leptostachya Eustoma russellianum Endemics of the Appalachian Province and the Atlantic and Gulf Coastal Plain Province Genera Sanguinaria Species and lower taxa Liriodendron tulipifera Taxodium distichum Castanea pumila Hamamelis virginiana Magnolia macrophylla subsp. macrophylla Magnolia