Ooh the two response you received are in line with mine — I Was also wondering what kind of aroma (I was going to say “smell” but aroma sounds ever so much better!).
I’m thinking this does look like either chrysanthemum family such as shungiku or perhaps feverfew.... or artemisia family such as yomogi (edible mugwort) or other medicinal mugwort such as moxa... My first thought was yomogi, though. Imafan, do they look like yomogi to you? They would be more frosty blue green-ish than shungiku.
Shungiku leaves would have more mum-like fragrance when handled, but I keep thinking the leaves would be a bit rounded off and not as sharply pointed like these....
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