A weed in the northeast, commonly known as black. What is its scientific name?

Hehe, although the map sent by the landlord can't be opened, when it comes to the famous wild fruits in Northeast China (black every day, black girls, dark naked lanterns and beads, etc.), it belongs to "Gu Nianer" and the "black" you said.

The scientific name is Solanum nigrum, belonging to Solanaceae. The grass is about 30 ~ 95 cm high, and the berries are spherical, with a diameter of 4 ~ 6 mm. They are purple-black when ripe. The flowering period is June ~1October, and the fruit period is July ~11October. Panicum miliaceum, usually born on the edge of hillside forest, is in the bushes between the stream and the village garden. I hope this information is helpful for childhood memories.