1. Family: Rubiaceae Juss.
    1. Amphiasma Bremek.

      1. This genus is accepted, and its native range is S. Tanzania to Namibia.

    [FTEA]

    Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

    Habit
    Perennial herbs or subshrubs, with rather strict rush-like stems, usually glabrous or glabrescent
    Leaves
    Leaves sessile, opposite; blades linear or filiform, rather rigid and usually erect or nearly so, acute and hard-pointed, the margins revolute; stipule-sheath mostly tubular, truncate or sometimes with 2 small cusps
    Flowers
    Flowers 4-merous, isostylous or heterostylous, in small rather dense terminal and axillary capituliform, umbelliform or cymose inflorescences, sometimes combining to form a more ample inflorescence; bracts connate in pairs
    Calyx
    Calyx-lobes triangular
    Corolla
    Corolla mostly white; tube cylindrical or somewhat funnel-shaped; throat ± densely hairy; lobes ovate or ovate-oblong, hairy in lower half inside
    Stamens
    Stamens included in the tube in long-styled flowers, exserted in isostylous and short-styled flowers; filaments glabrous; anthers dorsifixed
    Pistil
    Ovary 2-locular; ovules fairly numerous on peltate slightly stipitate placentas affixed just below the middle of the septum; style glabrous, included in short-styled flowers, exserted in long-styled and isostylous flowers; stigma-lobes filiform, densely covered with long papillae
    Disc
    Disc cushion-shaped, farinose
    Fruits
    Capsule globose, only slightly beaked, the beak dehiscing loculicidally
    Seeds
    Seeds dark brown, not very numerous, dorsiventrally compressed, oblong, smooth.
    [FZ]

    Rubiaceae, B. Verdcourt. Flora Zambesiaca 5:1. 1989

    Habit
    Perennial herbs or subshrubs, with rather strict rush-like stems, usually glabrous or glabrescent.
    Leaves
    Leaves sessile, opposite; blades linear or filiform, rather rigid and usually erect or nearly so, acute and hard-pointed, the margins revolute; stipule sheath mostly tubular, truncate or sometimes with 2 small cusps.
    Flowers
    Flowers 4-merous, isostylous or heterostylous, in small rather dense terminal and axillary capituliform, umbelliform or cymose inflorescences, sometimes combining to form a more ample inflorescence; bracts connate in pairs.
    Calyx
    Calyx lobes triangular.
    Corolla
    Corolla mostly white; tube cylindrical or somewhat funnel-shaped; throat ± densely hairy; lobes ovate or ovate-oblong, hairy in lower half inside.
    Stamens
    Stamens included in the tube in long-styled flowers, exserted in isostylous and short-styled flowers; filaments glabrous; anthers dorsifixed.
    Pistil
    Ovary 2-locular; ovules fairly numerous on peltate slightly stipitate placentas affixed just below the middle of the septum; style glabrous, included in short-styled flowers, exserted in long-styled and isostylous flowers; stigma lobes filiform, densely covered with long papillae.
    Disc
    Disk cushion-shaped, farinose.
    Fruits
    Capsule globose, only slightly beaked, the beak dehiscing loculicidally.
    Seeds
    Seeds dark brown, not very numerous, dorsiventrally compressed, oblong, smooth.

    Images

    Distribution

    Native to:

    Angola, Malawi, Namibia, Tanzania, Zambia, Zaïre

    Amphiasma Bremek. appears in other Kew resources:

    First published in Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2): 168 (1952)

    Accepted by

    • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Flora Zambesiaca
    • in Verh. K. Nederl. Akad. Wet., Afd. Natuurk., ser. 2, 48(2): 168 (1952).
    Flora of Tropical East Africa
    • in Verh. K. Nederl. Akad. Wet., Afd. Natuurk., ser. 2, 48(2): 168 (1952)

    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