Catalogue of plants
By: By Thomas C. Porter
Published: 1871
Language: eng
Number of pages: 498
Notes: "All of the plants comprised in this catalogue were collected during the expedition of Dr. F. V. Hayden to the head-waters of the Yellowstone River in the summer of 1871,with the exception of a small number gathered by Smith , in the month of August, on Gray's Peak and near Georgetown, Colorado Territory."

From Hayden's 5th Report of the United States Geological Survey of the Territories, 1871, p. 477-498.