In the Great Lakes, Ursuline nuns introduced floral patterns to tribes who quickly applied them to beadwork. Great Lakes tribes are known for their bandolier bags that might take an entire year to complete. During the 20th century the Plateau tribes, such as the Nez Perce, perfected contour-style beadwork in which the lines of beads are stitched to emphasize the pictorial imagery. Plains tribes are master beaders, and today dance regalia for men and women feature a variety of beadwork styles. While Plains and Plateau tribes are renowned for their beaded horse trappings, Subarctic tribes such as the Dene create lavish beaded floral dog blankets. Eastern tribes have a completely different beadwork aesthetic: Innu, Mi'kmaq, Penobscot, and Haudenosaunee tribes are known for symmetrical scroll motifs in white beads, called the "double curve." Iroquois are also known for "embossed" beading in which strings pulled taut force beads to pop up from the surface, creating a bas-relief. Tammy Rahr (Cayuga) is a contemporary practitioner of this style. Zuni artists have developed a tradition of three-dimensional beaded sculptures.