I agree, it'd definately be a trait, or at least a feature. But I also agree with Tamlin. It's something that they do naturally if grown the right way. They all possess the trait, but in some it lies dormant more than in others. Be it from chemicals or nutrients. It would certainly be understood though (hopefully), that any VFT with "clumping" anywhere near it's name, would mean that it tends to do it more than the next. Who knows, maybe it's just that plants outlook towards life, survival of the fittest and all.

I just think that the extensions of the names for Dionaea really do need to be cleared up. All of the other genus's have the respect of people saying "nope, that's not the right name"...as far as Dionaea muscipula these days, they're more like a brand name only. Sad.