Preserving Native Species Dennis Whigham, Wednesday, July 19, 2017 Watch Now This is a member - only webinar. If you are a current member, please sign in to access this webinar. If you are not yet a member, learn about the benefits and sign up todayIf your membership has expired, please renew your membership to access this webinar. Join Dennis Whigham, Senior Botanist of the North American Orchid Conservation Center, division of the Smithsonian Institution as he discusses the coalition of associations dedicated to preserving native species. Members only.