Thoreau writes in his journal:
Found the Arum triphyllum and the nodding trillium, or wake-robin, in Conant’s Swamp. An ash also in bloom there, and the sassafras quite striking. Also the fringed polygala by Conantum wood (Journal, 2:201).
Thoreau writes in his journal on 21 May:
The day before yesterday I found the male sassafras in abundance but no female. The leaves of my new pine on Merriam’s or Pine Hill are of intermediate length between those of the yellow pine and the Norway pine (Journal, 2:206).