Mary, I have found two older daylilies that we grow have much taller scapes than those reported to the AHS. As a result, I am not surprised if a daylily does not perform as registered. Even with the differences in growing conditions and care, a scape should not be off 10 inches or more once it has had time to settle in and is given sufficient water and fertilizer, but that has been the case here with these two.
Gold Hibiscus (1992) registered with a 14" scape grows about 26" here. We have had this one several years and added more in the late summer.
Handsome Ross Carter (1993) registered as a 14" scape grew 27" and 28" scapes this summer. It was added in the spring. Bill Waldrop also grows it and his scapes were 24" the day you and I were at his house for the CCDS nominations committee meeting. This is the daylily he was trying to convert, and he showed us the dip version in the garden.
No doubt daylily growers have seen these registered heights and decided NOT to grow them because of the short scape heights. These are two very beautiful daylilies. Glad we didn't let the "short" scape heights scare us away!
See what your NOID does this coming summer after it has had more time to settle in and received water and fertilizer. Hopefully, your scapes will be much taller in 2013. I agree with Juli that it is very hard to ID NOIDS. Even if remains a NOID, you will enjoy the blooms.
