Iowa Plant Notes, III

In two former papers the writer listed a number of plants that were noteworthy or new to the Iowa flora. The present paper is a continuation of such notes and records a number of interesting plants that have come to his notice as Curator of the Iowa State College herbarium since the second of these papers was published. The rapid introduction of plants not native to the state, as well as the discovery of native plants not heretofore recorded, makes such publication desirable, as it helps to furnish a basis for the future comparison of our rapidly changing native and introduced floras