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The5–7 Paulownia (五七桐,Go-shichi (no) Kiri) is themon (crest or emblem) used by theprime minister of Japan, theCabinet, and parts of theexecutive branch of theGovernment, and is one of thenational emblems of Japan. It resembles a stylizedpaulownia with5–7–5 flowers, and is one of various paulowniamon, collectively known as thepaulownia crests (桐紋,kirimon) or thepaulownia flower crests (桐花紋,tōkamon).[1][2]

Before thechrysanthemum crest was used extensively, the paulownia crest originally was the private symbol of theJapanese Imperial Family, from as early as the sixteenth century. TheToyotomi clan, led byToyotomi Hideyoshi, later adopted the paulownia for use as the crest of his clan. After theMeiji Restoration, the crest was eventually adopted as the symbol of the Japanese government.[3][4]
It is now mainly used by the Japanese government, as a contrast to thechrysanthemum crest which represents theemperor as the symbol of thesovereignty of the State, and members of theImperial Family.

More than 140 designs exist of the paulownia crests. The most common one is the5–3 paulownia (五三桐,Go-san no Kiri), consisting of three leaves and aninflorescence of 3–5–3 flowers.[1][2] It is used by theMinistry of Justice, theImperial Guard Headquarters, and theUniversity of Tsukuba.
The 5–7 Paulownia and 5–3 Paulownia are also called "Go-shichi Giri" and "Go-san Giri" without theparticle "no" respectively, due toconsonant mutation ("Kiri" → "Giri") known asrendaku in theJapanese language. The paulownia crests contain the leaves and flowers ofPaulownia tomentosa ("princess tree"), which is called "kiri" (桐) or "shirogiri (白桐)" in Japanese.
| Design | Image | Name | Japanese | Description |
|---|---|---|---|---|
| 5-3 Paulownia | "Maru ni Go-san no Kiri"[5] | 丸に五三桐[5] | According to a study by Japan Kamon Society (ja:日本家紋研究会,Nihon Kamon Kenkyūkai), about 70% of the paulownia crests use thisroundel of the 5-3 Paulownia. | |
| "Go-san Oni Kiri"[6] | 五三鬼桐[6] | The 5-3 Paulownia flowers of this design resembleoni's sharp horns. | ||
| 5-7 Paulownia | "Go-shichi no Kiri"[7] | 五七桐[7] | The plain 5-7 Paulownia has been used by those in power and is the official emblem of the Prime Minister, the Cabinet, and the Government today. It resembles a stylized paulownia with 5-7-5 flowers. | |
| "Taikō Kiri"[8] | 太閤桐[8] | Toyotomi Hideyoshi used the 5-3 Paulownia and 5-7 Paulownia crests, and this was one of his officialmon. A retiredkampaku was calledtaikō [ja], which commonly referred to him. | ||
| Other | "Tosa Kiri"[9] | 土佐桐[9] | TheTosaYamauchi clan used this variant, which came from the crest thatYamauchi Kazutoyo received from Toyotomi Hideyoshi. | |
| "Kiri Agehachō"[10] | 桐揚羽蝶[10] | This design shows aswallowtail butterflymimicking paulownia. It resembles the swallowtail butterflymon used by the famedTaira clan, which was one of the most important and powerful clans of Japan. |
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