1. Family: Rubiaceae Juss.
    1. Polysphaeria Hook.f.

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

    [FZ]

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

    Habit
    Glabrous or hairy shrubs or small trees with supra-axillary branches.
    Leaves
    Leaves usually thinly coriaceous with a characteristic divaricate venation, usually oblong-elliptic to lanceolate, less often more rounded; domatia absent; leaves subtending lateral branches often differing from those on main stems (smaller and broader in shape).
    Stipules
    Stipules triangular, acuminate or aristate with a raised mid-line.
    Flowers
    Flowers sessile or rarely pedicellate, usually small in axillary sessile or pedunculate bracteate clusters; bracts and bracteoles forming a complicated pattern of primary bracts; secondary bracts often supporting triads of flowers, and bracteoles often several per flower; usually joined to form a cup at the base of the calyx.
    Calyx
    Calyx glabrous or puberulous outside; tube campanulate or turbinate; limb-tube cup- or bowl-shaped, obconic or sometimes tubular, occasionally covering the corolla in bud, truncate or 4–5-toothed, persistent.
    Corolla
    Corolla glabrous or puberulous outside; tube narrowly funnel-shaped or cylindrical, densely hairy at the throat; lobes 4–5, strictly contorted, overlapping to the left (as seen in bud), ovate to oblong, acuminate, spreading.
    Stamens
    Stamens 4–5, inserted in the corolla tube, the filaments very short; anthers linear, fixed at the back near the base, included or partly exserted, sometimes minutely apiculate.
    Disc
    Disk small but evident, fleshy.
    Pistil
    Ovary 2-locular; ovule solitary in each locule, pendulous; style filiform, exserted, shortly pubescent or hairy, or apparently glabrous in one imperfectly known species, with filiform undivided or rarely ± ellipsoid or slightly to distinctly bifid stigma.
    Fruits
    Fruits globose to subglobose with a rather tough epicarp, 1–2-locular, 1–2-seeded.
    Seeds
    Seeds subglobose to plano-convex with striate-sulcate testa and very ruminate endosperm.
    [FTEA]

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

    Habit
    Glabrous or hairy shrubs or small trees with supra-axillary branches
    Leaves
    Leaves usually thinly coriaceous with a characteristic divaricate venation, usually oblong-elliptic to lanceolate, less often more rounded; stipules triangular, acuminate or aristate with raised mid-line
    Flowers
    Flowers sessile or rarely pedicellate, usually small in sessile or pedunculate bracteate clusters; bracts and bracteoles forming a complicated pattern of primary bracts, secondary bracts often supporting triads of flowers, and bracteoles often several per flower usually joined to form a cup at the base of the calyx
    Calyx
    Calyx-tube campanulate or turbinate; limb-tube cup- or bowl-shaped, obconic or sometimes tubular, occasionally covering the corolla in bud, truncate or 4–5-toothed, persistent
    Corolla
    Corolla-tube narrowly funnel-shaped or cylindrical, densely hairy at the throat; lobes 4–5, strictly contorted, overlapping to the left (as seen in bud), ovate to oblong, acuminate, spreading
    Stamens
    Stamens 4–5, inserted in the corolla-tube, the filaments very short; anthers linear, fixed at the back near the base, included or partly exserted, sometimes minutely apiculate
    Disc
    Disc small but evident, fleshy
    Pistil
    Ovary 2-locular; ovule solitary in each locule, pendulous; style filiform, exserted, shortly pubescent or hairy, or apparently glabrous in one imperfectly known species, with filiform or rarely ± ellipsoid undivided or slightly to distinctly bifid stigma
    Fruits
    Fruits pea-like with rather tough epicarp, 1–2-locular, 1–2-seeded
    Seeds
    Seeds subglobose to plano-convex with striate-sulcate testa and very ruminate endosperm.

    Images

    Distribution

    Native to:

    Aldabra, Benin, Cabinda, Cameroon, Central African Repu, Chad, Comoros, Congo, Ethiopia, Ghana, Gulf of Guinea Is., Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mali, Mozambique, Nigeria, Somalia, Sudan, Tanzania, Togo, Zambia, Zaïre

    Introduced into:

    Réunion

    Polysphaeria Hook.f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 1, 2001 Kisena, C.M. [1470], Tanzania K000316910
    Davis, A.P. [1086], Madagascar 61818.000
    Davis, A.P. [2138], Madagascar 63889.000

    First published in G.Bentham & J.D.Hooker, Gen. Pl. 2: 108 (1873)

    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 West Tropical Africa
    • Brenan in Kew Bull. 4: 854 (1949).
    • K. Schum. in E. & P. Pflanzenfam. 4, 4: 201 (1891)
    • —F.T.A. 3: 127
    Flora Zambesiaca
    • Verdcourt in Kew Bull. 35: 97–130 (1980).
    • in Bentham & J.D. Hooker, Gen. Pl. 2: 108 (1873).
    Flora of Tropical East Africa
    • Verdc. in K.B. 35: 97–130 (1980)
    • G.P. 2: 108 (1873)

    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.

    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