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  1. Family: Rutaceae Juss.
    1. Citrus L.

      1. This genus is accepted, and its native range is Himalaya to S. Central & S. Japan and Australia.


    Rutaceae, F. A. Mendoça. Flora Zambesiaca 2:1. 1963

    Small trees or shrubs.
    Leaves 1-foliolate, with winged rhachis.
    Flowers bisexual, (4) 5-merous.
    Stamens numerous, in phalanges.
    Ovary (4) 5-many-locular; loculi 4–8-ovulate.
    Fruit a large globose or ovoid or obovoid hesperidium, many-seeded and usually composed of numerous carpels.
    No indigenous species of Citrus are found in our area but some of the cultivated species (especially C. limon (L.) Burm. f. and C. aurantium L.) may become naturalized. Dr. G. R. Bates has kindly provided the appended note on the cultivation of Citrus in the Federation.

    Rutaceae, J.O. Kokwaro (University of Nairobi). Flora of Tropical East Africa. 1982

    Small evergreen shrubs or trees up to 10 m. high
    Leaves unifoliolate, with articulation between leaflet and petiole (except in C. medica); petiole normally winged
    Flowers single or in small clusters in leaf-axils, bisexual; calyx cup-shaped, 3–5-lobed; petals 4–8, normally 5, white; stamens numerous (20–40), in groups
    Ovary with 8–15 united carpels; locules 4–8-ovulate, with axile placentation
    Fruit a large globose, ovoid or obovoid berry known as a hesperidium, usually composed of many carpels, many-seeded.



    Native to:

    Assam, Bangladesh, Belize, Bismarck Archipelago, Borneo, Cambodia, China North-Central, China South-Central, China Southeast, East Himalaya, Hainan, Japan, Jawa, Laos, Lesser Sunda Is., Malaya, Maluku, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, New South Wales, Nicobar Is., Northern Territory, Philippines, Queensland, Solomon Is., South Australia, Sulawesi, Sumatera, Taiwan, Thailand, Vietnam, Wallis-Futuna Is., West Himalaya

    Introduced into:

    Alabama, Albania, Algeria, Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Bahamas, Benin, Bermuda, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Canary Is., Cape Verde, Cayman Is., Central American Pac, Chad, Christmas I., Colombia, Cook Is., Costa Rica, Cuba, Dominican Republic, Ecuador, Egypt, El Salvador, Ethiopia, Fiji, Galápagos, Gambia, Guinea-Bissau, Gulf of Guinea Is., Haiti, Honduras, Illinois, India, Italy, Jamaica, Korea, Leeward Is., Libya, Madeira, Mauritania, Mauritius, Mexico Central, Mexico Southeast, Mississippi, Morocco, Mozambique, Niger, Niue, Oman, Panamá, Paraguay, Peru, Puerto Rico, Rodrigues, Réunion, Samoa, Santa Cruz Is., Society Is., Socotra, Somalia, Sri Lanka, Tadzhikistan, Tennessee, Tibet, Tonga, Trinidad-Tobago, Tunisia, Uzbekistan, Vanuatu, Venezuela, Windward Is.

    Accepted Species


    Other Data

    Citrus L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    New Guinea 34478.000
    Sands, M.J.S. [832], Papua New Guinea 29047.056
    Utteridge, T.M.A. [316], New Guinea 71256.000


    First published in Sp. Pl.: 782 (1753)

    Accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2008). Flora of China 11: 1-622. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.


    Flora Zambesiaca

    • Gen. Pl. ed. 5: 341 (1754).
    • Sp. Pl. 2: 782 (1753)

    Flora of Tropical East Africa

    • L., Gen. Pl., ed. 5: 341 (1754)
    • Sp. Pl.: 782 (1753)


    Art and Illustrations in Digifolia
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    Flora Zambesiaca
    Flora Zambesiaca

    Flora of Tropical East Africa
    Flora of Tropical East Africa

    Herbarium Catalogue Specimens
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    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at and
    © Copyright 2017 World Checklist of Selected Plant Families.

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.