I found this Black Nightshade (Solanum ptycanthum) blooming next to our barn. The flower of the black nightshade looks very similar to the horsenettle flower because they are both members of the Nightshade family (Solanaceae). The big difference between the two flowers is size. The horsenettle flower is over an inch wide, whereas the black nightshade flower is much smaller at 1/3 inch wide.
The berries of Black Nightshade are edible to humans, if they are fully ripe and eaten in small quantities. Green berries contain the toxic alkaloid, solanum, like the foliage.
15 August 2012
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