Thanks, sooby. What another rabbit hole! I am getting the "dracunculoides" spelling, and the information that as (I think it was) you said, it is sold as Tarragon seed (though one article did say it doesn't set seed easily, another source said deadhead it if you don't want a lot more of it!)
Also, I did hear back from the company, who said the correct variety is "dracunculoides" though they didn't say Russian or Pursch (I have seen two spellings of his name too.)
Edit: And, I clearly have much more to learn about nomenclature, wow.
So I guess I do have the Russian one. I'll grow it out and see how it does.
And I am going to look for some seeds of that Tagetes, too, because that is what I really wanted, but my memory didn't kick in strong enough with the info I needed to actually find some!
The company is also voluntarily refunding my payment for that packet. Nice of them. And they say they have corrected their website also.
Good.