Scrophulariaceae of the central Rocky Mountain States
The purpose of this series of papers, of which this is the first, is to present in summarized form our knowledge of the plants of the family Scrophulariaceae growing within the states of Wyoming, Colorado, Utah, and in Idaho west to the 113th meridian. Within this area it is planned to consider all species, and to give for each its taxonomic history, its flowering season, and its distribution
Print Book, English, 1920
Govt. Print. Off., Washington, 1920