Abstract:
The peony is one of the representatives of ancient and elegant traditional culture, and it is also the national flower of the Chinese nation. However, did you know that the peony is not just a flower? It holds a very important position in plant taxonomy. This article will explore the mysteries of the peony from this perspective.

I. Plant Kingdom and Class: Determining Which Type of Organism the Peony Belongs To
The plant kingdom is a major category within the biological world, containing all plants. The plant kingdom is further subdivided into several classes, including gymnosperms and angiosperms. So which class does the peony belong to?
II. Angiosperm Class: The Peony's "Home"
The angiosperm class contains most seed plants, including the flowers we are most familiar with. We can determine that the peony belongs to the angiosperm class.

III. Dicotyledons: Basic Characteristics of the Peony
The angiosperm class can be further divided into dicotyledons and monocotyledons. And the peony belongs to the dicotyledons.
IV. Triploid: Chromosome Number of the Peony
In plant taxonomy, chromosome number is also an important characteristic. The peony has a triploid chromosome number, which is one of the characteristics of many angiosperms.
V. Ranunculales Order: The Order of the Peony
There are many different orders within dicotyledons, and the order to which the peony belongs is Ranunculales, which contains multiple families and genera.

VI. Paeoniaceae Family: The Family of Peony Relatives
Although peonies and tree peonies may look quite different, they are related in plant taxonomy. They both belong to the Paeoniaceae family, which also contains other genera.
VII. Genus Paeonia: Which Genus Does the Peony Belong To
The genus is a more specific taxonomic unit, and the genus to which the peony belongs is Paeonia, which contains many other species.
VIII. Inflorescence: What is an Inflorescence
An inflorescence refers to the arrangement of multiple small flowers within a single flower. The peony's inflorescence is rather special; it belongs to the double-petaled type.
IX. Single and Double Petals: Number of Peony Petals
In plant taxonomy, the number of petals is also an important characteristic. Peonies can be divided into single-petaled and double-petaled types. Single-petaled peonies have only one layer of petals, while double-petaled peonies have multiple layers of petals.
X. Tree: Growth Habit of the Peony
The growth habit of the peony is rather special; it is a tree plant that can grow to considerable heights. At the same time, it requires sufficient sunlight and water to grow healthily.
XI. Deciduous Plant: Leaf Shedding Characteristics of the Peony
A deciduous plant is one that sheds its leaves during cold winters. The peony is also a deciduous plant; it sheds its leaves in winter and grows new ones in spring.
XII. Perennial Plant: Life Cycle of the Peony
A perennial plant is one that can grow and flower for multiple years. The peony also belongs to this category; it can grow and flower for a long time, with a relatively long life cycle.
XIII. Asia: Distribution Area of the Peony
Globally, the distribution of peonies is relatively wide, but it is mainly distributed in Asia. China, Japan, South Korea, and other countries are major distribution areas for peonies.
XIV. Commercial Use: Peony is Not Just a Flower
Besides being ornamental plants, peonies have many commercial uses. For example, anthocyanins can be extracted from peony petals to make food additives, etc.
XV. The Peony is a Very Special Plant
Through the introduction in this article, we can discover that the peony is not just a flower, but a very special plant. From the perspective of plant taxonomy, we can gain a deeper understanding of this beautiful plant.
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