1. Family: Fabaceae Lindl.
    1. Cajanus Adans.

      1. This genus is accepted, and its native range is Palaeotrop.

    [LOWO]

    Legumes of the World. Edited by G. Lewis, B. Schrire, B. MacKinder & M. Lock. Royal Botanic Gardens, Kew. (2005)

    Vernacular
    pigeon pea, gungo pea
    Habit
    Herbs or shrubs
    Ecology
    Seasonally dry tropical open forest to grassland, often in rocky or partly disturbed areas
    Distribution
    SE Asia (Indian subcontinent, China, E Asia, Indo-China, Malesia, Papuasia, Pacific; 16 spp.), N Australia (15 spp.), W (Sudanian) Africa (1 sp.); 2 spp. widespread in Old World, including C. cajan (L.) Huth
    Note
    The subtribe Cajaninae forms a basal polytomy with a largely Phaseolinae, Glycininae and Psoraleeae clade (Doyle et al., 2000; Kajita et al., 2001) or is sister to a combined Erythrininae, Kennediinae, Desmodieae, Phaseolinae, Glycininae [and Psoraleeae] clade (Bruneau et al., 1995); Verdcourt in Mackinder et al. (2001: 163) states that in later editions of the International Code of Botanical Nomenclature (e.g., Greuter et al., 2000), Cajanus is treated as an orthographic variant of Cajan, and the conserved spelling is attributed to Adanson; this is not accepted here; Verdcourt (pers. comm.) has recently corrected the authority of Cajanus cajan from the widely used C. cajan (L.) Millsp., to C. cajan (L.) Huth
    [FTEA]

    Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

    Habit
    Shrubs or subshrubs
    Leaves
    Leaves pinnately 3-foliolate, petiolate; leaflets covered with small yellow glands; stipules and stipels very small
    Inflorescences
    Inflorescence a terminal panicle together with numerous subcapitate axillary racemes; pedicels long
    Calyx
    Calyx 5-lobed; lobes subequal, the upper pair joined
    Corolla
    Standard more or less round, auriculate
    Stamens
    Vexillary stamen free; anthers uniform
    Pistil
    Ovary elongate, 4–6-ovuled, velvety hairy; style thickened above, flattened below the small capitate stigma
    Fruits
    Pod linear-oblong, inflated, with a long persistent acumen, 3–7-seeded, with the seeds separated by oblique grooves on the pod faces
    Seeds
    Seeds rounded, compressed, with a linear hilum and small rim-aril.
    [FZ]

    Leguminosae, B. Mackinder, R. Pasquet, R. Polhill & B. Verdcourt. Flora Zambesiaca 3:5. 2001

    Habit
    Shrubs or subshrubs, climbers or prostrate herbs.
    Leaves
    Leaves pinnately, rarely subdigitately, 3-foliolate, petiolate; leaflets covered with small yellow glands beneath; stipules and stipels very small, or stipels absent.
    Inflorescences
    Inflorescence a terminal panicle together with numerous subcapitate axillary racemes, or all axillary or flowers fasciculate; pedicels long.
    Calyx
    Calyx 5-lobed; lobes subequal, the upper pair joined to form a bifid lip.
    Corolla
    Standard ± round, auriculate. Corolla yellow, persistent or deciduous.
    Stamens
    Vexillary stamen free; anthers uniform.
    Pistil
    Ovary elongate, 3–8-ovuled, velvety hairy; style filiform or thickened above, flattened below the small capitate stigma.
    Fruits
    Pod linear-oblong to oblong, inflated or compressed, with a long persistent acumen, 3–7-seeded, with the seeds separated by oblique grooves on the pod faces.
    Seeds
    Seeds rounded or ovoid, compressed, with a hilum central on shorter side of seed, often linear with well developed or small rim aril.
    [FTEA]

    Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

    Habit
    Herbs or shrubs, erect or climbing
    Leaves
    Leaves pinnately, rarely subdigitately, 3-foliolate; leaflets with scattered resinous glands beneath; stipules small; stipels absent
    Inflorescences
    Inflorescences axillary, racemose or subpaniculate or flowers fasciculate
    Calyx
    Calyx 5-lobed; lobes unequal, the upper pair joined to form a ± bifid lip
    Corolla
    Corolla small to medium-sized, yellow, persistent; standard round, with inflexed auricles
    Stamens
    Vexillary stamen free; anthers uniform
    Pistil
    Ovary 3–8-ovuled; style incurved at the middle, filiform or slightly thickened and glabrous above; stigma small, terminal
    Fruits
    Pods oblong or linear, compressed, septate and transversely furrowed between the seeds
    Seeds
    Seeds rounded or ovoid; hilum central on shorter side of seed, with a well-developed aril.
    [LOWO]
    Use
    Used for human food as a major pulse or vegetable crop ( pigeon pea or gungo pea ), otherwise used as pasture legumes, forage, green manure, cover crops and in medicine; C. cajan is widely cultivated in the Old and New World tropics

    Images

    Distribution

    Native to:

    Andaman Is., Assam, Bangladesh, Benin, Burkina, Cambodia, China South-Central, China Southeast, Comoros, East Himalaya, Ghana, Guinea, Hainan, India, Jawa, Laos, Lesser Sunda Is., Madagascar, Malaya, Mali, Myanmar, Nansei-shoto, Nepal, New Guinea, Nicobar Is., Nigeria, Northern Territory, Pakistan, Philippines, Queensland, Senegal, South China Sea, Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Togo, Vietnam, West Himalaya, Western Australia

    Introduced into:

    Afghanistan, Angola, Bahamas, Bermuda, Bismarck Archipelago, Bolivia, Brazil Northeast, Brazil South, Burundi, Cameroon, Cape Verde, Cayman Is., Central African Repu, Chad, Colombia, Congo, Cook Is., Cuba, Djibouti, Dominican Republic, Ecuador, Egypt, Eritrea, Ethiopia, Fiji, Florida, French Guiana, Gabon, Gambia, Guinea-Bissau, Gulf of Guinea Is., Guyana, Haiti, Honduras, Ivory Coast, Jamaica, Kenya, KwaZulu-Natal, Laccadive Is., Leeward Is., Liberia, Malawi, Mauritius, Mexico Southwest, Mozambique, Namibia, New Caledonia, New South Wales, Niger, Northern Provinces, Paraguay, Peru, Puerto Rico, Rwanda, Réunion, Saudi Arabia, Seychelles, Sierra Leone, Society Is., Somalia, Southwest Caribbean, Sudan, Suriname, Swaziland, Tadzhikistan, Tanzania, Transcaucasus, Trinidad-Tobago, Turkmenistan, Uganda, Uzbekistan, Venezuela, Windward Is., Yemen, Zambia, Zaïre, Zimbabwe

    Cajanus Adans. appears in other Kew resources:

    First published in Fam. Pl. 2: 326, 529 (1763)

    Accepted by

    • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.

    Literature

    Flora of West Tropical Africa
    • —F.T.A. 2: 215.
    Flora Zambesiaca
    • van der Maesen in Agric. Univ. Wageningen Pap. 85–4: 1–225 (1986).
    • Cat. Hort. Monsp.: 85 (1813) nom. conserv.*
    Flora of Tropical East Africa
    • Cat. Hort. Monsp.: 85 (1813), nom. conserv .

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Legumes of the World Online
    http://creativecommons.org/licenses/by-nc-sa/3.0