AN- ANEMONE: One or more rows of ray florets around a center of elongated tubular disc florets.
IC -INCURVED CACTUS: Petals rolled for their full length, with the tips of the petals curving toward the center of the flower.
SC- SEMI-CACTUS: Petals flat at the base, with less than one-half of the petals rolled or quilled.
C -STRAIGHT CACTUS: Petals rolled for one-half their length of the straight or nearly straight petal.
FD- FORMAL DECORATIVE: Flat petals with an even, regular placement throughout the flower.
ID- INFORMAL DECORATIVE: Generally flat petals, sometimes slightly rolled at the tips, but with irregular arrangement.
LC- LACINIATED: Ray florets split or incised no less than 1/6 their length. These flowers have an overall fringed effect.
PE- PEONY TYPE: Open centered flowers with two or more rows of petals surrounding a disc. Petals may be irregularly formed.
M- MINIATURE: A general term which applies to all dahlias producing flowers less than 4" in diameter (pompon's excluded).
POM- POMPON: Fully double flowers, almost round in shape with tightly quilled petals, blooms 2 inches and under in diameter.
MBALL- MINIATURE BALL: Fully double flowers, almost round in shape with tightly quilled petals, blooms 2" to 3 1/2 inches in diameter.
BALL- BALL: Fully double flowers, almost round in shape with tightly quilled petals, blooms over 3 1/2 inches in diameter.
COLL- COLLARETTE: One row of flat or slightly cupped petals surrounding a disc. Flowers have an inner set of petaloids generally multiple and irregular forming a collar around the disc.
OR- ORCHID TYPE: Open centered flowers with one row of ray florets surrounding a disc. The florets involutes for two-thirds or more of their length. Usually partially overlapping.
WL- WATERLILY: Closed center with multiple rows of ray florets normally broad and flat or slightly in curved, depth usually less than one inch in diameter.
S- SINGLE: Open centered flowers with a single row of ray florets surrounding a disc
MS- MIGNON SINGLE: Open centered flowers with a single row of ray florets surrounding a disc. Flowers are up to two inches in diameter.
N- NOVELTY: Characteristics differing from present classifications.
ST - STELLAR: Ray florets are long and narrow along their length with pointed tips preferred; like a star, they exhibit space between the ray florets in each of the rows and possess a uniform regular arrangement. All the ray florets will have a partially involute form in an approximate "U" shape in cross-section for the majority of their length and will recurve toward the stem; the bloom depth should be greater than one half of the diameter and should not be greater than its diameter.