I think the spelling is Jellitto.
Sorry -- Still looking for feedback
This is a very well respected seed company based in Germany, but maybe with North American outlets now. A horticultural college here uses them exclusively. They used to have an order minimum, don't remember what, and they charge in Euros.
The correct spelling is Jelitto (with one L). The English portion of their website is linked below. The site doesn't seem well designed, as I could only get it to work, just right, by using Internet Explorer. They've been in the US, in Louisville KY, since 1995. They have a limited but excellent Garden Watchdog rating.
Here is a link that might be useful: www.Jelitto.com
Perhaps try: North American Office: (For customers in USA and Canada) Jelitto Perennial Seeds 125 Chenoweth Ln. Suite 301 Louisville, KY 40207 USA?
I used them a few years ago and they had good quality seeds. Personally I was quite happy. A few of us Canucks got together and ordered from them. It was a large order which involved gardeners from one coast to the other - at the time you could only order from Germany. I never heard a complaint and noticed that we were all trading seeds from this purchase quite a few years after. :O)