Template:Britton & Brown, 1897
- Britton, N. & Brown, A. 1897. An illustrated flora of the northern United States, Canada and the British Possessions From Newfoundland to the Parallel of the Southern Boundary of Virginia, and from the Atlantic Ocean Westward to the 102d Meridian. Volume II, Portulacaceae to Menyanthaceae. 643 pp. Charles Scribner's Sons. BHL