nightshade

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Related to buffalo bur: Solanum rostratum

night·shade

(nīt'shād),
Any of a number of plants of the genus Solanum (family Solanaceae) and of some other genera of the family Solanaceae.

night·shade

(nīt'shād)
Any of various plants of the genus Solanum or Atropa, many of which have medicinal or toxic properties.