A Marsh Island

With the dual flowers in the design, for A Marsh Island, 1885, Sarah Wyman Whitman might be referencing the heroine of the novel:

“Doris, Doris,” the young man said to himself softly. “She is something new; it is like finding a garden flower growing in a field.” –Sarah Orne Jewett (Chapter II, A Marsh Island).

Or the reference could be to the duality of urban and rural living, a theme in the novel and in Jewett’s life—she loved city life and traveling, while she found refuge in nature.