Who knows what the petals of chrysanthemum are?

1967, Tang Zhonghao put forward a relatively complete classification of chrysanthemum varieties. According to the size of flower diameter, he divided them into two areas: starry sky and big flowers. Then, according to the ratio of the number of tongue-shaped flowers and tubular flowers in the head, he divided them into tongue-shaped flowers and tubular flowers in various regions, and finally divided them into categories and types according to the type and degree of petals. There are three and four types of tongue-shaped flowers in Mantianxing area: flat petal type: ① flat petal Xiao Ju type; Spoon type: ② Spoon type Xiao Ju type, ③ Honeycomb Xiao Ju type; Valve type: ④ Xiao Ju valve type. Disc flower system has 1 type and 2 types: supporting column type: ⑤ flat column Xiao Ju type, ⑤ tubular column Xiao Ju type. There are four types of tongue-shaped flowers in large flower area: 2 1 type: flat petal type: ⑦ wide petal type, ⑧ peony type and ⑨ rolled petal type; Stipules: ⑩ rosette type, (1 1) rolling type, (12) dancing lotus type, (13) spherical type, (14) dancing ball type; Valve types: (15) disc type, (16) sparse type, (17) spherical type, (18) feathery type, (19) dry needle type and (20) twisted type. There are three types of disc-flower system: flat-petal supporting column; (28) flat-petal supporting column; Spoon type: (29) Spoon type; Tubular valve support column; (30) Pipe flap pillar type.

1982 The classification seminar of chrysanthemum varieties of China Horticultural Society Flower Bonsai Association made a unified definition of the classification of chrysanthemums, which was divided into 5 categories and 30 types. They are: (1) flat petals: broadband, lotus, peony, flat, rolling and overlapping balls; (2) Spoon petals: spoon lotus, sparrow tongue, beehive, rosette, roll and spoon ball; (3) Tube petals: single tube, feather tube, tube disc, pine needle, sparse tube, tube ball, silk wool, flying flower, hook and loop, bead tube and needle tube; (4) Cinnamon: Osmunda japonica, Osmunda japonica, Osmunda japonica and Osmunda japonica; (4) Valve deformation: African claw, burr and shearing.