1. Family: Iridaceae Juss.
    1. Aristea Aiton

      1. This genus is accepted, and its native range is Tropical & S. Africa, Madagascar.

    [FZ]

    Iridaceae, P. Goldblatt. Flora Zambesiaca 12:4. 1993

    Habit
    Evergreen perennial herbs with short rhizomes, aerial parts persisting for more than one year.
    Leaves
    Leaves equitant, linear to lanceolate, distichous, mostly basal.
    Stem
    Stems terete to compressed and 2-sided, often strongly winged, simple or branched, bearing reduced leaves or leafless.
    Inflorescences
    Inflorescences composed of binate rhipidia (umbellate flower clusters in 2 series, unless reduced to 1–2 flowers); binate rhipidia 1-many, terminal on the main and secondary axes, or axillary and then stalked or sessile; spathes (enclosing the binate rhipidia) herbaceous to membranous or scarious, entire or lacerate; floral bracts (within the spathes) membranous or scarious, entire or lacerate.
    Flowers
    Flowers frequently sessile, actinomorphic, blue, each lasting one morning only, the perianth twisting spirally on fading.
    Tepal
    Tepals basally connate for c. 1 mm or less, usually subequal, lanceolate to obovate, spreading horizontally.
    Stamens
    Stamens erect, filaments free, anthers oblong.
    Pistil
    Ovary ovoid to turbinate or cylindric, trigonous, often included in the bracts; style filiform, usually eccentric, dividing apically into 3 short stigmatic lobes.
    Fruits
    Capsules ovoid-ellipsoid to oblong-cylindric, usually 3-lobed (in some South African species 3-winged), included or exserted from the spathes, the remains of the perianth usually persisting on the capsules.
    Seeds
    Seeds few to many per locule, rounded to angular (laterally compressed in some South African species).
    [FTEA]

    Iridaceae, Peter Goldblatt. Flora of Tropical East Africa. 1996

    Habit
    Evergreen herbs with rhizomes
    Leaves
    Leaves equitant, linear to lanceolate, distichous, crowded basally, usually a few also cauline
    Stem
    Stems rounded to compressed and 2-sided, or strongly winged, simple or branched, bearing reduced leaves or leafless
    Inflorescences
    Inflorescences binate rhipidia (umbellate flower-clusters in 2 series, unless reduced to 1-2 flowers); the binate rhipidia 1-many, either terminal on the main and secondary axes or axillary, then stalked or sessile; spathes (enclosing the binate rhipidia) green or partly to entirely membranous or scarious, the margins entire, irregularly torn or fringed; floral bracts (within the spathes) membranous or scarious, entire, irregularly torn or fringed
    Flowers
    Flowers frequently sessile, actinomorphic, blue, each lasting one morning only, the perianth twisting spirally on fading; tepals basally connate for 0.5-2 mm., usually subequal, lanceolate to obovate, spreading horizontally
    Stamens
    Stamens erect, free; anthers oblong
    Pistil
    Ovary ovoid to oblong and trigonous, usually included in the bracts; style filiform, eccentric, dividing apically into 3 short stigmatic-lobes, occasionally barely 3-fid
    Fruits
    Capsules ovoid-ellipsoid to oblong-cylindric and usually 3-lobed (in some South African SPECIES 3-winged), sessile or stalked, the remains of the perianth usually persisting on the capsules
    Seeds
    Seeds few-many per locule, rounded to angular (radially compressed in some South African SPECIES).

    Images

    Distribution

    Native to:

    Angola, Burundi, Cameroon, Cape Provinces, Ethiopia, Free State, Guinea, Kenya, KwaZulu-Natal, Lesotho, Madagascar, Malawi, Mozambique, Nigeria, Northern Provinces, Rwanda, Sierra Leone, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Great Britain, Hawaii, Jamaica, West Himalaya

    Aristea Aiton appears in other Kew resources:

    First published in Hort. Kew. 1: 67 (1789)

    Accepted by

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

    Literature

    Flora of West Tropical Africa
    • H. Weimarck in Lunds Univ. Årssk. N.F. Avd. 2, 36: 1-140 (1940).
    • F.T.A. 7: 346
    • Hort. Kew. 1: 67 (1789)
    Flora Zambesiaca
    • Vincent in S. African J. Bot. 51: 209–252 (1985).
    • Weimarck in Acta Univ. Lund. n.s., 36, 1 (1940).
    • in Hort. Kew. ed. 1, 1: 67 (1789).
    Flora of Tropical East Africa
    • Vincent in S. Afr. Journ. Bot. 51: 209-252 (1985)
    • Weim. in Lunds Univ. Arssk., N.F., Avd. 2, 36 (1940)
    • in Hort. Kew. 1: 67 (1789)

    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 2018. 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 2018. 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