Interesting information, Margaret! I peeked at google and found an archived AHS link to a report about peeled and unpeeled daylily seeds from experiments at DePaul University in 1954. It seems they were trying to determine if the seed coat was preventing needed oxygen from reaching the embryo during or after the cold-stratification process. Though they stated that peeling the coat had "no stimulatory effect" on germination, and that the necessary level of oxygen diffused through the "relatively impermeable enveloping structures," their table seems to show that control-group seeds (unpeeled) germinated at a rate of 48 percent versus 72-76 percent for the peeled seeds.
See Page 89:
http://www.daylilies.org/AHSar...
So, this prompted me to take a seed from fridge storage, "peel" it as best I could, and try to photograph it. It is rather more round than Brian's seeds, but I suppose it is possible his could just be flatter daylily seeds to begin with, as I have seen some of those in my own harvests. I did notice a nodule at the "end" of the seeds, like Brian's above. Perhaps this prompts another experiment to see how such seeds germinate and grow, and maybe Brian will verify with the seller that peeled-seeds are the usual way they handle and sell daylily seeds? Would be interesting to see if someone has pictures of peeled daylily seeds that closely match up with Brian's.
My cold-stratified seed after "peeling" some of its outer coat:
