Is this an Artemisia?

Is this an Artemisia?

Observation - Is this an Artemisia?. Description: Ribbed stems, not hairy. Several feet high. Leaves opposite, lanceolate. Underside of leaf has lots of tiny white spots (pores?). No obvious scent. Seen in northern France on edge of field.

Ribbed stems, not hairy. Several feet high. Leaves opposite, lanceolate. Underside of leaf has lots of tiny white spots (pores?). No obvious scent. Seen in northern France on edge of field.