Rocky Mountain Wild Flowers has been designed primarily for the use of the visitor to Jasper, Banff and Waterton Lakes National Parks, Alberta, to help him to recognize and know a little better the commoner and more spectacular wild flowers within their boundaries, mainly in the alpine and subalpine zones; and, because a great many of the flowers described and illustrated are also common in the alpine country to the south and west of these parks, it will also be useful there.