1. Family: Rubiaceae Juss.
    1. Genus: Phellocalyx Bridson
      1. Phellocalyx vollesenii Bridson

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

    [FTEA]

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

    Habit
    Shrub or small tree 3–7 m. tall; young branches ± square, pubescent, older branches covered with thin greyish bark somtimes flaking to reveal red-brown under-layer.
    Leaves
    Leaves blue-black when dry, confined to new growth at apex of stem, mature leaf-blades narrowly obovate to obovate, 9–16 cm. long, 4–7 cm. wide, apex acute to shortly acuminate, base cuneate, chartaceous, glabrous above, glabrous or glabrescent with tertiary nerves conspicuously reticulate beneath; petioles slender 0.7–1.7 cm. long; stipules ovate-triangular, 2–4 mm. long, shortly apiculate, densely covered with silky hairs inside and with a few large colleters.
    Flowers
    Flower-buds borne on leafing branches; flowers borne on short lateral naked branches 0.8–6 cm. long; bracts stipule-like.
    Calyx
    Calyx-tube 3–4 mm. long; limb 1–1.3 cm. long.
    Corolla
    Corolla green or yellowish green with small purple flecks outside, drying blackish; tube 1–1.4 cm. long, ± 8 mm. wide at top, sparsely pilose outside, glabrous at throat but pubescent near base inside; lobes 2–3.3 cm. long, 6–13 mm. wide, obtuse or acute, glabrous.
    Pistil
    Style creamish, 9 mm. long; stigmatic club 1.5–2.4 cm. long.
    Fruits
    Fruit black when mature, 4–7(–10 from field notes) cm. in diameter, 1-locular; scar fawnish, surrounded by a narrow inner and broad outer fawnish rings.
    Seeds
    Seeds brown, 5 mm. long, 4 mm. wide, 3 mm. thick.
    Figures
    Fig. 83.
    Habitat
    Thicket on sand or stony hill top; 270–365 m.
    Distribution
    T8
    [FZ]

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

    Habit
    Shrub or small tree 3–7 m tall; young branches ± square in cross-section, pubescent, older branches covered with thin greyish bark sometimes flaking to reveal red-brown underlayer.
    Leaves
    Leaves occasionally ternate, blue-black when dry, confined to new growth at apex of branches; blades of mature leaves 9–16 × 4–7 cm, narrowly obovate to obovate, acute to shortly acuminate at the apex, cuneate at the base, membranous, glabrous on upper surface, glabrous to glabrescent with tertiary nerves conspicuously reticulate beneath; domatia present as white hairy tufts in the nerve axils; petioles 7–17 mm long, slender; stipules 2–4 mm long, ovate-triangular, shortly apiculate, densely covered with silky hairs within and with a few large colleters.
    Flowers
    Flower buds borne at apex of leafing branches; flowers borne on short lateral naked branches 0.8–6 cm long; bracts stipule-like.
    Calyx
    Calyx-tube 3–4 mm long; limb-tube 10–13 mm long.
    Corolla
    Corolla green, with small purple flecks outside, drying blackish; tube 10–14 mm long, c. 8 mm wide at top, sparsely pilose outside, glabrous at throat, but pubescent near base within; lobes 2–3 × 0.6–0.9 cm, oblong, obtuse to acute, glabrous.
    Style
    Style 9 mm long, creamish.
    Pollen presenter
    Pollen presenter 1.5–2.4 cm long.
    Fruits
    Fruit black when mature, 4–7(10 from field notes) cm in diameter; scar fawn- coloured surrounded by a narrow inner and a broad outer fawn-coloured ring.
    Seeds
    Seeds 5 × 4 × 3 mm, brown.

    Images

    Distribution

    Native to:

    Malawi, Mozambique, Tanzania

    Phellocalyx vollesenii Bridson appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 1979 Vollesen, K. [s.n.], Tanzania K000414825 isotype

    First published in Kew Bull. 35: 316 (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
    • Bridson in Distr. Pl. Afr. 21, t. 723 (1980).
    • Bridson in Kew Bulletin 35: 316, figs. 1 & 2 (1980)

    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 2020. 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 2020. 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