| plains spadefoot / Scaphiopus bombifrons this spadefoot toad lives in plains and hills and river bottoms in areas of low rainfall east of the Rocky Mountains |
| plains pocket mouse / Perognathus flavescens small rodent of open areas of United States plains states |
| plains pocket gopher / Geomys bursarius gopher of chiefly grasslands of central North America |
| Great Plains / Great Plains of North America a vast prairie region extending from Alberta and Saskatchewan and Manitoba in Canada south through the west central United States into Texas, formerly inhabited by Native Americans |
| Plains Indian / Buffalo Indian a member of one of the tribes of American Indians who lived a nomadic life following the buffalo in the Great Plains of North America |
| plains lemon monarda / Monarda pectinata annual of southern United States |
| great plains paintbrush / Castilleja sessiliflora hairy plant with pinkish flowers, Great Plains to northern Mexico |