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  1. Family: Acanthaceae Juss.
    1. Asystasia Blume

      1. This genus is accepted, and its native range is Tropical & S. Africa to N. Queensland.


    Flora Zambesiaca Acanthaceae (part 2) by Iain Darbyshire, Kaj Vollesen and Ensermu Kelbessa

    Herbs or shrubs.
    Leaves opposite, entire (rarely undulate to serrate).
    Flowers in terminal or axillary spikes or racemes; bracts persistent, prominent or not; bracteoles usually minute, rarely large.
    Calyx deeply divided into 5 lobes, one lobe longer and slightly wider than others.
    Corolla indistinctly 2-lipped with 5 subequal lobes, lower mid-lobe largest and usually distinctly rugulate, or moderately to strongly 2-lipped, with a 3-lobed lower and 2-lobed upper lip; basal tube cylindric, widening upwards into a ± distinct throat.
    Stamens 4, inserted in throat, subequal to distinctly didynamous, included in tube, more rarely exserted; anthers bithecous, thecae slightly superposed, each with 1 (rarely 2 or 3) spurs at base or apiculate.
    Style filiform, pubescent in basal part or glabrous; stigma capitate with 2 equal or subequal flat ellipsoid lobes; ovary with 2 ovules per locule.
    Capsule 2–4-seeded, clavate with sterile solid basal stalk about half total length.
    Seeds compressed, rarely globose, ± circular in outline, with or without a thickened irregularly crenate margin, surfaces tuberculate, rugose, rugose-tuberculate or rarely smooth.
    A genus of about 50 species, centred in tropical Africa with the highest diversity in eastern Africa to South Africa; also in India, SE Asia, and through Indonesia to New Guinea, Australia and the Pacific. One species introduced to the Americas.



    Native to:

    Andaman Is., Angola, Assam, Bangladesh, Benin, Botswana, Burkina, Burundi, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, Chad, China South-Central, China Southeast, Christmas I., Comoros, Congo, Djibouti, East Himalaya, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., India, Ivory Coast, Jawa, Kenya, KwaZulu-Natal, Laos, Lesser Sunda Is., Liberia, Madagascar, Malawi, Mali, Maluku, Mozambique, Myanmar, Namibia, New Guinea, Niger, Nigeria, Northern Provinces, Northern Territory, Oman, Panamá, Queensland, Rwanda, Saudi Arabia, Senegal, Sierra Leone, Socotra, Somalia, Sri Lanka, Sudan, Sulawesi, Swaziland, Tanzania, Thailand, Togo, Uganda, Vietnam, Western Australia, Yemen, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Alabama, Bahamas, Belize, Brazil Southeast, Cayman Is., Cuba, Dominican Republic, El Salvador, Fiji, Gilbert Is., Hainan, Haiti, Honduras, Jamaica, Leeward Is., Madeira, Malaya, Mauritius, Nauru, New Caledonia, Nicaragua, Niue, Puerto Rico, Rodrigues, Réunion, Society Is., South China Sea, Taiwan, Tonga, Trinidad-Tobago, Venezuela, Venezuelan Antilles, Windward Is.

    Accepted Species


    Other Data

    Asystasia Blume appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Keay, R.W.J. [25037], Nigeria 4207.000
    Cable, S. [527], Cameroon 61754.000


    First published in Bijdr. Fl. Ned. Ind.: 796 (1826)

    Accepted by

    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne.


    Flora of West Tropical Africa

    • —F.T.A. 5: 130.

    Flora Zambesiaca

    • —Nees in in De Candolle, Prod. 11: 163 (1847).
    • Bijdr.: 796 (1826).


    Art and Illustrations in Digifolia
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    Flora Zambesiaca
    Flora Zambesiaca

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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.

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