Hoary plantain - Plantago media
In the path to Roche à Lomme (Lomme Rock), Viroinval (June 2019).
http://biodiversite.wallonie.be/fr/plantago-media.html?IDC=3278&IDD=4417

"Plantago media", known as the hoary plantain, is a species of genus "Plantago" native to central and western Europe, including Great Britain and introduced to parts of the north-east United States. Its generic name is derived from the Latin for sole; like other members of "Plantago", it should not be confused with the plantain, a starchy banana.
Similar species: Lamiales
By Patomarazul
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Uploaded Dec 9, 2021. Captured Jun 2, 2019 11:15 in Rue Roche à Lomme 3, 5670 Viroinval, Belgium.