Time to do a trade! Got butterworts?

Anyways, I have S. Dana's Delight and had what I thought was a Tarnok, just by looking at pictures. I have also had D. filiformis (California Sunset). Both have clumped for me. Both would show a new plant when the new growing season got underway. Can't say as how much is environmental and how much is just what they do. The sundew had been a window sill plant, before I had them outside and the pitcher plant was an outdoor plant. Are these plants under crowded conditions or do they have room to spread their roots?

Both of those varieties are propagated for the trade via tissue culture, and I've read that the "clumping" phenomenon can be a result of that process. Somehow the meristem never gets the message to stop dividing, as I understand it.