1. Family: Rubiaceae Juss.
    1. Genus: Polysphaeria Hook.f.
      1. Polysphaeria dischistocalyx Brenan

        This species is accepted, and its native range is S. Tanzania to S. Tropical Africa.

    [FTEA]

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

    Habit
    Shrub or less often a small tree, 1.5–7(–9) m. tall with graceful glabrous rather compressed branches, bark pale brown or grey, flaking.
    Leaves
    Leaf-blades lanceolate or oblong-lanceolate, 5.4–16.6(–21.5) cm. long, (1.5–)2–4.9(–5.8) cm. wide, acute, acuminate or obtuse at the apex, cuneate or somewhat rounded at the base, sometimes those below lateral branches reduced, ± round to oblong-lanceolate, glabrous, thinly coriaceous, shiny; lateral nerves 7–12; petiole 5–8 mm. long; stipules broadly triangular, 1.5–6 mm. long, 2.5–3 mm. wide, abrupdy drawn out into an acumen 1 mm. long, deciduous.
    Inflorescences
    Inflorescences sessile many-flowered glomerules 1.2 cm. in diameter.
    Flowers
    Flowers scented, sessile, bracteolate; lower bracteoles connate into an irregularly bilobed cup, 1.5–2 mm. tall, puberulous outside, white-ciliate on the margin; upper forming an ovoid calyptra 4.5–5(–7) mm. long, 2.7–3 mm. wide, puberulous outside, strigose hairy inside with a curved beak at apex, at first closed and enclosing bud but later irregularly circumscissile or sometimes divided longitudinally into 2 lobes.
    Calyx
    Calyx pale pink turning brown, closed in bud, scarious, sparsely to rather densely puberulous outside either all over or only towards the apex, silky-strigose inside, 4–5.5 mm. long; tube 1.5–2.5 mm. long, 2-lobed, lobes broadly ovate, 2.25–3 mm. long, 3.25–3.5 mm. wide at the base, apiculate at the apex.
    Corolla
    Corolla white or whitish rose, obovoid in bud, 6 mm. long, acute, puberulous or glabrous outside; tube tinged greenish, 3.5–4.75 mm. long, 2.5–3.5 mm. wide at throat; lobes ovate-triangular, 2.5–2.8 mm. long, 1.7–2 mm. wide.
    Style
    Style white, ± 6.5 mm. long, densely pubescent save at the base, bifid at the apex.
    Fruits
    Fruit green, flushed red, becoming wine-red or black, globose, 6–8 mm. diameter, glabrous, crowned by the persistent calyx-limb; flesh green and sweet.
    Figures
    Fig. 96.
    Habitat
    Riverine forest and Brachystegia woodland; 500–1400 m.
    Distribution
    T6 T7 T8
    [FZ]

    Rubiaceae, D.M.Bridson & B.Verdcourt. Flora Zambesiaca 5:3. 2003

    Habit
    Shrub or less often a small tree 1.2–7(9) m tall, with graceful glabrous rather compressed branches; bark pale brown or grey, flaking.
    Leaves
    Leaves 5.4–16.6(21.5) × (1.5)2–4.9(5.8) cm, lanceolate or oblong-lanceolate, acute, acuminate or obtuse at the apex, cuneate or somewhat rounded at the base, sometimes those below the lateral branches reduced, ± round to oblong-lanceolate, glabrous, thinly coriaceous, shiny; lateral nerves 7–12; petiole 5–8 mm long; stipules 1.5–6 × 2.5–3 mm, broadly triangular, abruptly drawn out into an acumen 1 mm long, deciduous.
    Inflorescences
    Inflorescences of sessile many-flowered glomerules 12 mm in diameter.
    Flowers
    Flowers scented, sessile, bracteolate; lower bracteoles connate into an irregularly bilobed cup, 1.5–2 mm tall, puberulous outside, white ciliate on the margin; upper bracteole forming an ovoid calyptra 4.5–5(7) × 2.7–3 mm, puberulous outside, strigose hairy inside, with a curved beak at apex, at first closed and enclosing the flower bud but later irregularly circumscissile or sometimes divided longitudinally into 2 lobes.
    Calyx
    Calyx pale pink turning brown, closed in bud, scarious, sparsely to rather densely puberulous outside either all over or only towards the apex, silky-strigose inside, 4–5.5 mm long; tube 1.5–2.5 mm long with the limb-tube splitting into 2 lobes; lobes 2.25–3 mm long, 3.25–3.5 mm wide at the base, broadly ovate, apiculate at the apex.
    Corolla
    Corolla white or whitish-rose, obovoid in bud, 6 mm long, acute, puberulous or glabrous outside; corolla tube tinged greenish, 3.5–4.75 mm long, 2.5–3.5 mm wide at throat; lobes 2.5–2.8 × 1.7–2 mm, ovate- triangular.
    Style
    Style white, about 6.5 mm long, densely pubescent save at the base, bifid at the apex.
    Fruits
    Fruit green flushed red, becoming wine-red or black, 6–8 mm in diameter, globose, glabrous, crowned by the persistent calyx limb; flesh green and sweet.

    Images

    Distribution

    Native to:

    Malawi, Mozambique, Tanzania, Zambia

    Polysphaeria dischistocalyx Brenan appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 25, 1945 McClounie, J. [151] K000419942 Unknown type material
    Apr 25, 1945 McClounie, J. [151] K000419943 Unknown type material
    Apr 25, 1945 McClounie, J. [151] K000419944 Unknown type material

    First published in Kew Bull. 4: 81 (1949)

    Accepted by

    • Calane da Silva, M., Izdine, S. & Amuse, A.B. (2004). A Preliminary Checklist of the Vascular Plants of Mozambique: 1-184. SABONET, Pretoria.
    • 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: 113, fig. 4 (1980).
    • Brenan in Kew Bulletin 4: 81 (1949).
    • J.P.M. Brenan, Check-lists of the Forest Trees and Shrubs of the British Empire no. 5, part II, Tanganyika Territory p. 520 (1949).

    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

    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