Barbara M. Thiers is the Patricia K. Holmgren Director of the William and Lynda Steere Herbarium, Vice President, and Curator of Bryophytes at the New York Botanical Garden. She is Past President of the Society for the Preservation of Natural History Collections, and member of the Advisory Council of the Biodiversity Collections Network and member of the External Advisory Committee of iDigBio. She is also the editor of IndexHerbariorum, the on-line index to the world’s herbaria and associated staff.