Toxicological trivia from September 23, 2015: Populus nigra, the black poplar, is a species of cottonwood poplar, the type species of section Aigeiros of the genus Populus, native to Europe, southwest and central Asia, and northwest Africa.In South America, it is grown in Chile and Argentina, variety Populus nigra L. var. italica. They have been recommended in:a) Infusion for internal use because its sudorific and diuretic properties; b) The tincture in some disorders of the urinary system;c) Both previous assertions are correct.

Correct answer: c. Read more in WP