2. Roll-over type: the tongue-shaped flower has multiple wheels, the petals of the outer wheel are pressed down, the back of the petals are rolled inward, and the petals of the inner wheel are folded or held towards the heart. The whole flower-shaped appearance turns out and rolls in. The petals of the inner wheel gradually turn outward with the degree of flowering. Tubular flowers are rare, and they are not exposed or slightly exposed when flowering.
3, lotus type: tongue-shaped flowers 3-6 rounds, petals generous, each petal is loosely arranged and embraced. The whole flower looks neat, slightly oblate, like a lotus. Tubular flowers stand out when they are in full bloom and are exposed.
4, honeycomb type: multi-round tongue-shaped flowers, short spoon petals, multiple petals nearly upright, neatly arranged. The whole flower is spherical, named after the spoon rolls like a bell and looks like a beehive. There are few or no tubular flowers, and they are not exposed when flowering.
5, pine needle type: the tongue-shaped flowers are round and the tubules are long and straight. The length of each valve is almost the same, and occasionally there are slightly curved valves that extend radially. There are bundles of pine leaves; All flowers are hemispherical. Tubular flowers few or none, not exserted.
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