See also: Black poplar (homonymy)

The Liard was old a Monnaie of Cuivre of use in France until in 1856. The last ones strike go back to 1792. It was worth the quarter of a penny.

The Liard was also a currency of the Principality of Liege.

Quotations

A ray of the sad sky, a black poplar of the ground| Victor Hugo | Contemplations