Definitions
Bicolor: flower whose petal segments are a completely different color than its sepal segments.
Bitone: flower with inner and outer segments of different tints of the same color. The outer segments (sepals) are lighter than the inner segments (petals). A Reverse Bitone has darker sepals than petals.
Single flower: has two whorls or layers of segments: sepals for the outer whorl and petals for the inner whorl.
Double flower: has more than one petal whorl (= hose-in-hose double) or has a stamen whorl that contains petal-like (petaloid) stamens (peony type double). Flowers may be a combination of both double types. Outgrowths of extra tissue from the midrib or elsewhere on a petal do not constitute a double.
Polymerous flower: has extra segments in the sepal whorl or the petal whorl or both.
Spider: petal length is four times the petal’s width or more, minimum ratio 4.0:1.
Unusual form: based on the form of the petals and/or sepals.Unusual Form characteristics must be displayed on at least 3 petals or sepals. Minimal overlap between petals or sepals. There are three types: cascade, crispate, and spatulate.
Cascade (or curling): petals and sepals should cascade down like a waterfall. They may also be curling.
Crispate: segments are pinched, twisted or quilled.
Pinched: petals or sepals pinched or folded with a visible crease. The pinching does not have to occur on the full length of the petal or sepal.
Twisted: petals or sepals present a pinwheel or corkscrew effect.
Quilled: petals or sepals turn in upon themselves along their length to form a tubular shape. The tube can be at the base or the end of the tepals.
Spatulate: petals and/or sepals are markedly wider at the end than at the base.