Thoreau writes in his journal:
P.M.—To Hill.
Sassafras (fertile) will apparently bloom to-morrow. These, too,—the Young trees,—have been killed the past winter, like the fever-bush.
There is, leaning over the Assabet at the Grape Bower, an amelanchier variety Botryapium about five inches in diameter and some twenty-eight feet long, a light and graceful tree . . .