Template:Britton & Brown, 1896
- Britton, N. & Brown, A. 1896. 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 I, Ophioglossaceae to Aizoaceae. 612 pp. Charles Scribner's Sons. BHL