scflowers said:
When I grew Kwanso, I didn't think I'd ever get rid of the runners out of that bed!
Runners! I think that term is what many growers would call it, rather than referring to either rhizomes or stolons. 'Runners' describes the 'how' of what is occurring and is a common descriptive term for many plants who send out little replicas of themselves, often whether they are welcome or not.
So some daylily fans increase by division, some by adding close fans thereby increasing the size of the clump and some by runners, which put the new fan out away from the mother fan.