[Black Agnes]

Is this them?

http://rareseeds.com/red-welsh-bunching-onion.html

I put your allium perutile in a search engine and got ‘welsh perennial onion’ then searched for that.

[ApplegateRanch]

No, Fistulosum is the Welsh or Bunching onion; these are sometimes called False Welsh Onion.

Google is slippery with the bait & switch results. :)