Beryl Hallworth is a botanist, teacher, curator and naturalist associated with the Herbarium of the Department of Biological Sciences at the University of Calgary since 1967. She is the author and co-author of several papers and book chapters on plants and natural history.
C.C. Chinnappa is Professor of Botany and Curator of the Herbarium at the University of Calgary. His main research interests are the evolutionary strategies of polyploid plant species. He has published more than one hundred papers on biosystemics, cytogenetics, palynology and phenotypic plasticity of plants.