© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.
© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.
© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.
© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.
© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.
© 1971 Weatherhill. Collection of Helen Fowler Library, Denver Botanic Gardens. License: All Rights Reserved.