Foliage creates fluffy mounds like clouds.
Feverfew (Tanacetum parthenium)
This pic appears to be in the wrong place in Plantfiles. Will someone please move it, thanks. :)
I believe this plant and foliage shown is actually Feverfew (Tanacetum parthenium). Feel free to compare this pic to the pics in the Plantfiles for Feverfew.
In my experience, some herb plant vendors, seed traders, and herb seed vendors tend to mislabel Feverfew as 'Roman chamomile.' Feverfew does share some medicinal uses with Chamomile, and has a very similar flower. All of this can easily lead to confusion.
But the 'fluffy mounding foliage' shown here is the giveaway which distinguishes Feverfew from Chamomile. :)
I'm watching this thread for further conversation and developments.