Marsh clematis, also known as leather flower, is a climbing vine with delicate purple-blue flowers that bloom in late spring and summer. Some other synonyms for marsh clematis include purple clematis, vase-flower and virgin's bower. It is a native plant that is typically found in wetlands, damp meadows and along streams and rivers. The plant features hairy, lobed leaves with thin, wiry stems that creep up trees and other plants for support. The unique beauty of marsh clematis has made it a popular choice for gardeners, and it is often grown on trellises or arbors to add height and visual interest to outdoor spaces.