Snowberry (Symphoricarpos albus)

The snowberry is mostly a decorative garden shrub, but can often be seen in hedgerows as a garden escape. The conspicuous waxy white berries are between ½ to 1 inch long and contain two small stone seeds. They're mildly poisonous - containing saponins and Chelidonine (C₂₀H₁₉NO₅), but a significant quantity would need to be eaten to cause ill effects. They appear in the autumn, and last through most of the winter - due mainly to the fact that nothing wants to eat them.