Ditch Lilies

It's daylily season.
I've been tagging them as they bloom, trying to make sense of the patchwork of varieties given by family and friends, found here, saved from a former home, moved around the yard, purchased from plant sales or the Clearance table at Lowe's (I'm always trying to save something!)
I know the names of only one or two. Each plant has a story - this is the one about the ditch lilies.
A few years ago, I was taking a shortcut to Battleground Avenue and passes a neat little cottage with a flower-filled yard. By the street was a sign - Ditch Lilies, Free.
I stopped and chatted with the owner. She'd been overrun with them and was offering them free "for the digging." This was in September, their flowering done. So I dug a basketful and planted them on Elam Avenue.
I moved them a couple of times, along with the rest, and kept watching for blooms. Never happened. What could be wrong? Ditch lilies are the toughest of creatures. A fellow GSO gardener had this to say.
Finally, I got it.
The ditch lily I was thinking of, Hemerocallis fulva, was a strong grower, long stems, and single orange blooms. It's sister to the more elegant lemon lily, Hemerocallis flava, and when then grow together, tends to overwhelm it.
The ditch lilies I dug that day, and have moved, have indeed bloomed. They are double, with red flashings at the base of the petals. They are called Kwanso, I think.
I know this because I passed along clumps of ditch lilies to a neighbor. Those bloomed famously this year, and I spotted the same flowers here and there among my beds.
Mistaken identity, solved!