1. Family: Rubiaceae Juss.
    1. Genus: Oldenlandia L.
      1. Oldenlandia nematocaulis Bremek.

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

    [FZ]

    Rubiaceae, B. Verdcourt. Flora Zambesiaca 5:1. 1989

    Habit
    Slender strict annual herb 2–20 cm. tall, with either unbranched or single branched stems with some of the branchlets basal and almost as long as or overtopping the main stem; stems angled, densely to sparsely scabridulous with short papilla-like hairs, particularly on the angles.
    Leaves
    Leaf blades 0.25–2.2 cm. x 0.1–1.5 mm. wide, linear to linear-lanceolate, acute at the apex, scarcely narrowed at the base, scabridulous-pubescent or glabrous or glabrous above and scabridulous on margins and midrib beneath, revolute; petiole not developed; stipule sheath 0.7–2 mm. long, divided into (1)2–5 filiform pubescent setae 0.5–3.5 mm. long.
    Flowers
    Flowers heterostylous, in sessile mostly subglobose 1-many-flowered inflorescences supported by the 2 terminal leaves or sometimes the apical internodes suppressed and lower axillary inflorescences joined with the terminal one and apparently supported by a whorl of 4 leaves, up to 4–9 mm. in diameter in fruit but minute specimens may bear only 1 fruit; pedicels often purplish, 0.2–1.5 mm. long, sometimes papillate.
    Calyx
    Calyx tube 0.6–0.8 mm. long, ovoid or subglobose, scabridulous; lobes often purplish, 1–3 x mostly 0.1–0.2 mm., linear-lanceolate, probably attaining the maximum length only in fruit, the margins scabridulous-ciliate.
    Corolla
    Corolla white, pink, bluish white or pale mauve; tube slender, 2–3.3 mm. long, widened at the throat, upper half hairy inside in short-styled forms, throat densely barbate in long-styled forms; lobes 1–1.5 x 0.7–0.9 mm., oblong-elliptic.
    Filaments
    Filaments exserted 1 mm. in short-styled flowers, included in the throat in long-styled flowers.
    Style
    Style 2 mm. long in short-styled flowers, the stigma lobes 0.8 mm. long, 3.3–4.3 mm. long in long-styled flowers, the stigma lobes 0.3–1 mm. long.
    Fruits
    Capsule 0.9–1.8 mm. tall (including the beak), 1.2–1.8 mm. wide, subglobose to transversely oblate, papillate, slightly scabridulous or glabrous, the beak very rounded, scarcely raised c. 0.5 mm. tall, the persistent calyx lobes slightly decurrent.
    Seeds
    Seeds brown, 0.25–0.35 mm. long, ellipsoid, reticulate, the testa cells granular.
    [FTEA]

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

    Habit
    Slender strict annual herb 2–20 cm. tall, with either unbranched or single branched stems with some of the branchlets basal and almost as long as or overtopping the main stem; stems angled, densely to sparsely scabridulous with short papilla-like hairs, particularly on the angles.
    Leaves
    Leaf-blades linear to linear-lanceolate, 0.25–2.2 cm. long, 0.1–1.5 mm. wide, acute at the apex, scarcely narrowed at the base, scabridulous-pubescent or glabrous above and scabridulous on margins and midrib beneath, revolute; petiole not developed; stipule-sheath 0.7–2 mm. long, divided into (1–)2–5 filiform pubescent setae 0.5–3.5 mm. long.
    Flowers
    Flowers heterostylous, in sessile mostly subglobose 1–many-flowered inflorescences supported by the 2 terminal leaves or sometimes the apical internodes suppressed and lower axillary inflorescences joined with the terminal one and apparently supported by a whorl of 4 leaves, up to 4–9 mm. in diameter in fruit but minute specimens may bear only 1 fruit; pedicels often purplish, 0.2–1.5 mm. long, sometimes papillate.
    Calyx
    Calyx-tube ovoid or subglobose, 0.6–0.8 mm. long, scabridulous; lobes often purplish, linear-lanceolate, 1–3 mm. long, mostly 0.1–0.2 mm. wide, probably attaining the maximum length only in fruit, the margins scabridulous-ciliate.
    Corolla
    Corolla white, pink, bluish white or pale mauve; tube slender, 2–3.3 mm. long, widened at the throat, upper half hairy inside in short-styled forms, throat densely barbate in long-styled forms; lobes oblong-elliptic, 1–1.5 mm. long, 0.7–0.9 mm. wide.
    Filaments
    Filaments exserted 1 mm. in short-styled flowers, included in the throat in long-styled flowers.
    Pistil
    Style 2 mm. long in short-styled flowers, the stigma-lobes 0.8 mm. long, 3.3–4.3 mm. long in long-styled flowers, the stigma-lobes 0.3–1 mm. long.
    Fruits
    Capsule subglobose to transversely oblate, 0.9–1.8 mm. tall (including the beak), 1.2–1.8 mm. wide, papillate, slightly scabridulous or glabrous, the beak very rounded, scarcely raised or ± 0.5 mm. tall, the persistent calyx-lobes slightly decurrent.
    Seeds
    Seeds brown, ellipsoid, 0.25–0.35 mm. long, reticulate, the testa-cells granular.

    Images

    Distribution

    Native to:

    Burundi, Malawi, Tanzania, Zambia

    Oldenlandia nematocaulis Bremek. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 1, 1974 Tanner, R. [4973], Tanzania K000414315
    Aug 1, 1949 Thompson [787], Tanzania K000414316 Unknown type material
    Bidgood, S. [5160], Tanzania K000190388
    Bidgood, S. [5681], Tanzania K000468743

    First published in Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2, 48(2): 222 (1952)

    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 30: 295, fig. 8 (1975).
    • Bremek. in Verh. K. Nederl. Akad. Wet., Afd. Natuurk., ser. 2, 48 (2): 222 (1952).

    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