Swamp lily

Saururus (called in the United States, Swamp-lilies) is arranged by Linnæus in his second natural order […] Saururus […] is a very mild plant, and is often used in the shape of poultices, by the people of the United-States!

Sympathetic ferns stretched their soft green fronds along the sides of the naked wood, as if they wanted to supply the fallen tree with some of the verdure of which it had been cruelly bereft, and even a gay, flowering swamp lily, that wonderful flaming flower that holds its chalice above all other wood blooms, bent just a little toward the one branch of that tree that still clung to the parent trunk.

This is later on, when the days have lengthened and the dandles of swamp lilies flame in the ditches.