Tiffany tended to favor naturalistic designs for his lampshades as well as his windows, which can be associated with his lifelong interest in horticulture, but also prompted by the popular Art Nouveau movement. The beautiful and innovative floral motifs for shades were implemented by a team of prize-winning designers, many of whom were women, including Clara Driscoll, Mrs. Curtis Fueschel and Agnes Northrup.
http://www.albanyinstitute.org/exhibits/archive%20pages/tiffany.bio.htm