Sorry Larry, I never meant to confuse you more. We're getting off track of helping you understand UF's. The cristate issue is not a part of your original question, just an example I was using as to how easy it is to create confusion when terms are improperly applied and the importance of knowing and understanding how terms apply when hybridizing or purchasing daylilies. Sure, there will always be that daylily you see and must have regardless of what anyone calls it.
Sooby wrote..."or was this dictionary definition written before anyone thought that cristation might occur on petaloid segments so only mentions petals? If it described somewhere as only occurring on petals .."
The definitions for Sculpted forms were written long after doubles were recognized and defined. Single flowers with cresting are distinctive and were recognized as Sculpted cristate forms in the fall of 2010. The relationship between the 3 single flower subgroups, pleated, relief and cristate is documented and does not include double flowers.
" Sculpted: A term used to describe three-dimensional structural features involving or emanating from the throat, midrib or elsewhere on the petal surfaces. Sculpted forms belong to one of three different groups: Pleated, Cristate and Relief."
"Cristate: A term that refers to daylily flowers with appendages of extra tissue growing from the midrib or elsewhere on the surface of the petals."
Both clearly state petal surface.
"Petal: Top three tepals of a daylily flower that is not a double.
"Double: Single flowers consist of two whorls (layers) of perianth segments: the sepals and the petals. A double flower has more than one petal whorl (hose-in-hose double), or a stamen whorl that contains petaloid (petal-like) stamens (peony type double). In the peony type, carpels may also be petaloid. Individual flowers may be a combination of both double types.
Outgrowths of extra tissue from the midrib or elsewhere on a petal are not considered to constitute a double. Extra segments in the normal two perianth whorls classify a flower as polymerous rather than double."
"Unusual Form: A more recent registration class based on form, its definition states: The Unusual Form class is based exclusively on form, not on color or color patterns. The flower must have distinctive petal or sepal shapes on all three petals or all three sepals. It includes three basic forms: crispate, cascade and spatulate.
The crispate form is further defined below. Ideally, there should be minimal overlap with a v-shaped space between 3 or more floral segments."
This is a registered Double UF. Is it because it displays characteristics of both a double flower and the single flower petals/sepal characterisitcs of a UF? Or because the third whorl segments are UF? It's because it shows both, the petal and sepal characteristics of a single flower UF and changes to the third whorl making it a double flower.
Following the incorrect assumption that third whorl characteristics include the defined petal/sepal characteristics of a single flower.... this would be a Double, Unusual and Sculpted form? It's not a Double, UF and Sculpted form....it's a Double.
I do understand that people might not have a botanical background and know the difference between a single flower and double flower. That's why having clear definitions is important and education, both primary responsibilities of AHS. That said, you can't force people to ask questions, check definitions or even read a guideline before registering if they can find it.