<i>Caltha palustris</i> L. - Marsh marigold, Yellow marsh marigold, Cowslip, Cowflock<br>Original caption: MARSH MARIGOLD; COWSLIP - <i>Caltha palustris</i>
Homer D. House, New York State Botanist.  Walter B. Starr of the Matthews-Northrup Company, Buffalo, and Harold H. Snyder of the Zeese-Wilkinson Company, New York, photographers.
1918
<i>Wild Flowers of New York</i> Part 1, Plate 59. Page 233. University of the State of New York, State Museum, Albany.