Author:A. Linn Bogle Contents 1 Affiliation 1.1 Institution 1.2 Location 2 Treatments Affiliation Affiliation information has been provided by Volume 19-20-21. Institution University of New Hampshire Location Durham, New HampshireTreatments LLeitneria Leitneria floridana Leitneriaceae PPetasites Petasites frigidus Petasites frigidus var. frigidus P cont.Petasites frigidus var. palmatus Petasites frigidus var. sagittatus Petasites frigidus var. ×vitifolius