Citrus ichangensis

Citrus ichangensis

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

Citrus ichangensis, the Ichang papeda (Chinese: 宜昌橙), is a slow-growing species of the Citrus subg. Papeda, which has characteristic lemon-scented foliage and flowers.

It is native to southwestern and west-central China^[1] and is likely named for the city of Yichang (宜昌), in China's Hubei province. It is sometimes referred to as Citrus × ichangensis.

The Ichang papeda's main claim to fame is its unusual hardiness. With the exception of Poncirus trifoliata, it is the hardiest citrus plant, tolerating both moderate frost and damp conditions.^[2] For this reason, it is perhaps the only species of true citrus which can be reliably grown outside in the temperate areas of Europe and the United States.

Description

Relatively rare in cultivation, the Ichang papeda is a large shrub or small tree, growing to 3-4.5 m,^[3] and produces a small, mandarin-like fruit. Leaves feature a broad petiole, and resemble the leaves of the yuzu and the Kaffir lime in appearance. The fruit has a fragrant, but rugged rind, and may be oval, spherical, or flattened in shape, ripening to yellow or orange. The fruit contains many large monoembryonic seeds and a small quantity of bitter or sour juice; some fruits lack juice entirely and are instead filled with a mass of pith and seeds.

The Ichang papeda is occasionally grown as an ornamental.

Hybrids

Ichang lemon (also known as the shangjuan)^[2]
Yuzu^[2]
Kabosu
Hyuganatsu

Both the shangjuan and the yuzu have a number of culinary uses and are notably cold-hardy.

References

↑ Khan, Iqrar Ahmad (2007). Citrus genetics, breeding and biotechnology. CAB International. p. 27. ISBN 978-0-85199-019-4.
1 2 3 Spiegel-Roy, Pinchas; Goldschmidt, Eliezer E. (1996). Biology of citrus. Cambridge University Press. p. 32. ISBN 978-0-521-33321-4.
↑ Hogan, Sean (2008). Trees for all seasons: broadleaved evergreens for temperate climates. Timber Press. p. 79. ISBN 978-0-88192-674-3.

Citrus

True species	Byeonggyul 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 Kishumikan Kiyomi Komikan 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 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 Dangyuja

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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