Note: Do not rely on this information. It is very old.
Bittersweet
Bittersweet, a literal translation of the specific name of Solanum Dulcamara, the woody nightshade, a common British plant clambering in hedgerows or by the waterside. It has drooping clusters of small bright purple flowers, resembling in miniature those of its congener the potato, which are succeeded by oval fruits becoming scarlet. Its young stems have been used medicinally, and have a taste at first bitter but afterwards sweet. It is often popularly confused with the deadly nightshade (Atropa Belladonna), an allied plant very different in appearance.