Amanatsu

Natsumikan / Amanatsu

Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Sapindales
Family:	Rutaceae
Genus:	Citrus
Species:	C. × natsudaidai
Binomial name
**Citrus × natsudaidai** Hayata

Amanatsu (甘夏) or natsumikan is a yellowish orange citrus hybrid fruit, a group of cultivars of Citrus natsudaidai (ナツミカン（夏蜜柑^?) , which were discovered in 1740 in the Yamaguchi prefecture of Japan.

Names

In Japan, it is officially known as the kawano natsu daidai (カワノナツダイダイ（川野夏橙）^?) , but also colloquially the amanatsu, amanatsu daidai (甘夏橙), amanatsukan (甘夏柑), and amanatsu mikan (甘夏蜜柑（甘夏みかん）).

Description

Natsumikan is about the size of grapefruit and oblate in shape. The fruit contains 12 segments and about 30 seeds. The rough textured fruit is easy to peel and is commonly eaten fresh. It is also used for wide variety of products ranging from marmalades to alcoholic beverages.

Cultivation

Natsumikan is grown commercially in Japan, notably in Yamaguchi, Kumamoto and Ehime prefecture. The city of Hagi is famous for its natsumikans, particularly when used in natsumikan juice and ice cream.

Yamaguchi Prefecture takes such pride in their natsumikan industry, that the typically white crash barriers of Japan were changed to a befitting orange.

Genetics

The natsumikan tree is believed to be genetically derived from the pomelo (Citrus grandis or Citrus maxima).

Medicine

Researchers found that immature natsumikan peel is beneficial for the treatment of chronic allergic dermatitis.^[1]

Gallery

The large bearing tree.
Locally at Nagato, Yamaguchi.
At street side in Hagi, Yamaguchi.
On Nokonoshima Island.
Blossoms.
On tree.
Fruit.

References

↑ "Extract from peel of Citrus natsudaidai alleviates experimental chronic allergic dermatitis in mice". PubMed Central (PMC).

Natsudaidai at the Citrus Variety Collection, see discussion there.

Citrus

True species	Citron Indian wild orange Kumquat Mandarin Mangshanyegan Papeda Pomelo Clymenia Australian and Papuan wild limes

Major hybrids	Grapefruit Lemon Lime Orange

True and hybrid cultivars	Alemow Amanatsu Bergamot orange Bizzaria Bitter orange Blood lime Blood orange Buddha's hand Cam sành Cara cara navel Cherry orange Citrange Citrumelo Clementine Daidai Dekopon Fairchild tangerine Florentine citron Hassaku orange Hebesu Hyuganatsu Imperial lemon Iyokan Jabara Jaffa orange Kabbad Kabosu Kaffir lime Kakadu lime Kalpi Key lime Khasi papeda Kinnow Kiyomi Laraha Lumia Mandelo Mandora Melanesian papeda Melogold Meyer lemon Murcott Myrtle-leaved orange tree Ōgonkan Orangelo/Chironja Oroblanco Palestinian sweet lime Persian lime Perrine lemon Pixie mandarin Ponderosa lemon Ponkan Rangpur Reikou Rhobs el Arsa Rough lemon Sakurajima komikan orange Sanboken Satsuma mandarin Setoka Shangjuan Shonan Gold Sudachi Sweet lemon Sweet limetta Tangelo Tangerine Tangor Ugli fruit Valencia orange Variegated pink lemon Winged lime Xã Đoài orange Yuukou mandarin Yuzu

Non-hybrid citrons	Balady citron Corsican citron Diamante citron Fingered citron Greek citron Moroccan citron Yemenite citron

Non-hybrid mandarin oranges	Nanfengmiju Cleopatra mandarin Shīkwāsā

Non-hybrid papedas	Ichang papeda Citrus halimii or Mountain "citron"

Non-hybrid pomelos	Banpeiyu

Australian and Papuan citrus (Microcitrus, Eromocitrus, and Clymenia subgenera)	Australian outback lime Australian round lime Brown River finger lime Desert lime Mount white lime (Microcitrus) New Guinea wild lime Russell River lime Clymenia

Kumquat/Fortunella hybrids (×Citrofortunella)	Calamondin Citrangequat Limequat Orangequat Procimequat Sunquat Yuzuquat

Related genera	Citrus glauca Poncirus/Trifoliate orange Triphasia Brassii Grandifolia Trifolia

Drinks	Chūhai Curaçao Grapefruit juice Lemonade Limeade Orange juice Yuja hwachae Yujacha

Products	Calcium citrate Citric acid Lemonene Limonene Neroli Orange flower water Orange oil Succade Zest

Diseases	Black spot CTV/Tristeza Exocortis Greening Mal secco Phytophthora citricola

Related topics	The Citrus Industry Citrus production Citrus rootstock Citrus taxonomy Cold-hardy citrus Hesperidium Japanese citrus List of citrus fruits Mother Orange Tree Orangery University of California Citrus Experiment Station University of California, Riverside Citrus Variety Collection

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