Very nice.
From T. radix a litter of 92 snakes is recorded. Do not know where I found that on this moment. But I have placed it on my site and that means that it was a trusted item.
Must have been in one of these:
Strumpfbandnattern - Hallmen & Chlebowy
The Garter Snakes - Rossman e.a.
Strumpfbandnattern - Thomas Bourguignon
Die Strumpfbandnattern - Frank Mutschmann