1. Family: Rubiaceae Juss.
    1. Genus: Psydrax Gaertn.
      1. Psydrax kraussioides (Hiern) Bridson

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

    [FTEA]

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

    Habit
    Scandent shrub or climber 1.5–7 m. tall, with short lateral branches at right-angles to the stem or somewhat backwardly curved, glabrous; young branches round to square, occasionally furrowed; bark fawn.
    Leaves
    Leaf-blades elliptic to broadly elliptic or sometimes oblong-elliptic, 4–14 cm. long, 1.5–6.5 cm. wide, acute to acute-acuminate or sometimes abruptly acuminate at apex, rounded, obtuse or acute at base, coriaceous or sometimes subcoriaceous, moderately shiny to shiny above; lateral nerves (4–)5–8 main pairs, often impressed above, and with tertiary nerves completely obscure; domatia absent or present as unerupted or erupted blisters; petioles 5–9 mm. long; stipules with a truncate base and linear to narrowly oblong lobe perpendicular to stem, 4–7 mm. long.
    Flowers
    Flowers 5-merous, borne in sessile to shortly pedunculate 2–15-flowered subumbellate cymes; peduncles 0–4 mm. long; pedicels 5–8 mm. long in flowering stage, glabrous; bracteoles glabrous.
    Calyx
    Calyx-tube 1 mm. long, glabrous; limb reduced to a dentate rim, ciliate.
    Corolla
    Corolla white or cream; tube 3.75–6 mm. long, with a ring of deflexed hairs below mid-point inside; lobes triangular-lanceolate, 3.5–6 mm. long, 1.25–2.5 mm. wide, with a tapering apiculum, 0.75–1.75 mm. long, at apex, sparsely pubescent towards base above.
    Anthers
    Anthers ovate, less than 1/3 the length of the corolla-lobes, reflexed.
    Pistil
    Style 7.5–10 mm. long; stigmatic knob cylindrical above, widening at base, 1–1.75 mm. long.
    Disc
    Disk glabrous.
    Fruits
    Fruit greyish green, almost didymous, 7–7.5 mm. long, 1.4–1.5 cm. wide, often galled; pedicels accrescent; pyrene semicircular to almost circular in outline, 7 mm. in diameter, with shallow groove from point of attachment to centre, cartilaginous, scarcely bullate.
    Figures
    Figs. 131/17, p. 752; 132/24, p. 754 & 161, p. 908.
    Habitat
    Riverine woodland and forest; 1200–2000 m.
    Distribution
    T1 T4 T6 T7 W. Africa
    [FZ]

    Rubiaceae, D. Bridson. Flora Zambesiaca 5:2. 1998

    Habit
    Scandent shrub or climber 1.5–7 m tall, with short perpendicular or somewhat backwardly curved lateral branches, glabrous; young branches round to square in cross section, occasionally furrowed; bark fawn-coloured.
    Leaves
    Leaf blades 4–14 × 1.5–6.5 cm, elliptic to broadly elliptic or sometimes oblong-elliptic, acute to acuminate or sometimes abruptly acuminate at apex, acute or rounded at base, subcoriaceous, moderately shiny to shiny on upper surface; lateral nerves in (4)5–8 main pairs, often impressed above; tertiary nerves completely obscure; domatia absent, or present as unerupted or erupted blisters; petioles 5–9 mm long; stipules 4–7 mm long, truncate at the base and with a linear to narrowly oblong decurrent lobe with plane face perpendicular to the stem.
    Flowers
    Flowers 5-merous, borne in 2–15-flowered sessile to shortly pedunculate umbellate cymes; peduncles 0–4 mm long; pedicels 5–8 mm long in flowering stage, glabrous; bracteoles glabrous.
    Calyx
    Calyx tube 1 mm long, glabrous; limb reduced to a dentate ciliate rim.
    Corolla
    Corolla white or cream; tube 3.75–6 mm long, with a ring of deflexed hairs below the mid-point inside; lobes 3.5–6 × 1.25–2.5 mm, triangular-lanceolate, with a tapering apiculum 0.75–1.75 mm long, sparsely pubescent towards base on upper surface.
    Anthers
    Anthers reflexed.
    Style
    Style 7.5–10 mm long.
    Pollen presenter
    Pollen presenter 1–1.75 mm long, ± cylindrical, widening towards the base.
    Disc
    Disk glabrous.
    Fruits
    Fruit 7–7.5 × 14–15 mm, almost bispherical, greyish-green, sometimes galled; pedicels accrescent.
    Pyrene
    Pyrene 7 mm wide, semicircular to almost circular in outline, with a shallow groove from the point of attachment to the centre, cartilaginous, scarcely bullate.

    Images

    Distribution

    Native to:

    Angola, Burundi, Cameroon, Central African Repu, Ghana, Guinea, Ivory Coast, Liberia, Malawi, Mozambique, Nigeria, Sierra Leone, Tanzania, Zambia, Zaïre, Zimbabwe

    Psydrax kraussioides (Hiern) Bridson appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2010 Tchiengue, B. [2256], Cameroon K000436911
    Nov 1, 2008 Cheek, M. [13628], Cameroon K000580319
    Jul 1, 2007 Tchiengue, B. [1863], Cameroon K000461043
    Aug 1, 1999 Etuge, M. [3613], Cameroon K000338756
    Aug 1, 1999 Onana, J.-M. [497], Cameroon K000338755
    Jan 1, 1992 Jaff, B. [116], Cameroon K000541006
    Jan 1, 1984 Stolz, A. [1914], Malawi K000422509 Unknown type material
    Jan 1, 1984 Stolz, A. [1914], Malawi K000422510
    Jan 1, 1984 Welwitsch [5352], Angola K000412583 Unknown type material

    First published in Kew Bull. 40: 723 (1985)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Strugnell, A.M. (2006). A checklist of the Spermatophytes of Mt. Mulanje, Malawi Scripta Botanica Belgica 34: 1-199.
    • 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

    Kew Backbone Distributions
    • Ruhsam, M in Ruhsam, M. (2005). Survey of all the Rubiaceae specimens at the Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • Bridson in Kew Bulletin 40: 723 (1985).

    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