1. Family: Rubiaceae Juss.
    1. Genus: Polysphaeria Hook.f.
      1. Polysphaeria cleistocalyx Verdc.

        This species is accepted, and its native range is Kenya to Tanzania.

    [FTEA]

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

    Habit
    Shrub 1.5–6 m. tall; stems glabrous, the older ones covered with pale longitudinally fissured corky bark.
    Leaves
    Leaf-blades lanceolate or narrowly oblong-lanceolate, 5–14 cm. long, 2–4 cm. wide, narrowed to an acute apex, cuneate at the base, mostly thin, glabrous; petiole 8 mm. long; stipules triangular, 3 mm. long, 2.5 mm. wide, keeled, glabrous, ± persistent.
    Flowers
    Flowers in sessile or shortly pedunculate inflorescences; peduncles up to 4 mm. long; bracts and bracteoles 1.5–2.5 mm. long, variable, those next to the calyx joined to form a truncate or bilobed cup, sometimes apiculate, never completely enclosing the bud, finely densely adpressed silky; sessile inflorescences form a globose nodal cluster up to 1.5 cm. diameter.
    Calyx
    Calyx enclosing the bud in young flower, with similar indumentum, the sub acute apex slightly toothed, splitting into 2 lobes as the flower develops; tube 1 mm. long, limb 4 mm. long.
    Corolla
    Corolla creamy white, glabrous or sparsely puberulous; tube funnel-shaped, 4 mm. long; lobes oblong-ovate, 2–2.5 mm. long and wide, rounded to an apiculate apex.
    Pistil
    Style densely hairy save at base, 6 mm. long; stigmatic lobes ± 1 mm. long.
    Fruits
    Fruits ripening from white to purplish black, subglobose or depressed globose, often somewhat didymous, 7–10 mm. long and wide, puberulous around the persistent calyx base.

    Images

    Distribution

    Native to:

    Kenya, Tanzania

    Polysphaeria cleistocalyx Verdc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 1978 Goetze, W. [389], Tanzania K000316680 holotype

    First published in Kew Bull. 35: 112 (1980)

    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.

    Literature

    Flora of Tropical East Africa
    • Verdc. in Kew Bulletin 35: 112 (1980).

    Sources

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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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