Abstract
Applications of gibberellic acid have been shown to alter the growth patterns of genetic dwarfs in mize and in peas. Since the dwarf alpine habits of some native species have been demonstrated also to be genetically conditioned, among which are included certain species of Potentilla and Achillea, the present study was an attempt to investigate the possibility of growth alterations of alpine Achillea lanulosa alpicola Keck and Potentilla diversifolia Lehm. when treated with gibberellic acid. Voucher specimens of these species are in the personal herbarium of the author.