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  1. Family: Rubiaceae Juss.
    1. Genus: Spermacoce L.
      1. Spermacoce congensis (Bremek.) Verdc.

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

    [FZ]

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

    Habit
    Erect annual herb 17–60 cm. tall; stems ± simple or sparingly branched, 4-angled, bifariously shortly pubescent in the grooves.
    Leaves
    Leaf blades 1.3–8.5 x 0.22–1.25 cm., linear-lanceolate to lanceolate, acute at the apex, cuneate or ± rounded at the base, sessile, ± thick, with thickened whitish margins and midrib, glabrous save for the margins and main nerve beneath or scabrid to pilose on both surfaces, the margins nearly always ciliate with short stiff hairs; stipule sheath united with petioles, 5–6 mm. long, ridged, hairy or shortly pubescent with 5–6 ciliolate setae 0.2–1.2 cm. long.
    Flowers
    Flowers sessile in axillary and pseudoterminal (1)3–6-flowered clusters at many of the upper nodes, the apical 2–3 often run together to form a short spike-like inflorescence; bracteoles 7 mm. long.
    Calyx
    Calyx tube glabrous, oblong, 1.5 mm. long; lobes 2, 0.3–2 cm. x 0.8–1.8 mm., linear-lanceolate to lanceolate, similar to the leaves in texture and indumentum, ciliate.
    Corolla
    Corolla white, pink or blue; tube 6–7(13) x 3.5 mm. at the mouth, cylindrical to narrowly funnel-shaped, with a ring of hairs inside 2.5–3 mm. above the base; lobes 3–6 x 1.2–2.2 mm. oblong-lanceolate.
    Filaments
    Filaments 1–3.5 mm. long.
    Pistil
    Style exserted 1.5–6 mm., finely papillate; stigma capitate, c. 7 mm. wide.
    Fruits
    Capsule 3.5–5 x 2.5 mm., subglobose, crowned with the calyx lobes, opening right out, the valves joined only at the base, almost circular in outline, convex, 3.5 x 4 mm., glabrous, transversely wrinkled; septum persistent, shiny.
    Seeds
    Seeds dark brown to black, 3–3.6 x 1.5 x 1.3 mm., oblong-ellipsoid, shining, very finely reticulate, with a ventral groove and a conical yellowish basal appendage (elaiosome) 1.1–1.5 mm. long.
    [FTEA]

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

    Habit
    Erect annual herb 17–60 cm. tall; stems ± simple or sparingly branched, 4-angled, bifariously shortly pubescent in the grooves.
    Leaves
    Leaf-blades linear-lanceolate to lanceolate, 1.3–8.5 cm. long, 0.22–1.25 cm. wide, acute at the apex, cuneate or ± rounded at the base, sessile, ± thick, with thickened whitish margins and midrib, glabrous save for the margins and main nerve beneath or scabrid to pilose on both surfaces, the margins nearly always ciliate with short stiff hairs; stipule-sheath united with petioles, 5–6 mm. long, ridged, hairy or shortly pubescent with 5–6 ciliolate setae 0.2–1.2 cm. long.
    Flowers
    Flowers sessile in axillary and pseudoterminal (1–)3–6-flowered clusters at many of the upper nodes, the apical 2–3 often run together to form a short spike-like inflorescence; bracteoles 7 mm. long.
    Calyx
    Calyx-tube glabrous, oblong, 1.5 mm. long; lobes 2, linear-lanceolate to lanceolate, similar to the leaves in texture and indumentum, 0.3–2 cm. long, 0.8–1.8 mm. wide, ciliate.
    Corolla
    Corolla white or blue; tube cylindrical to narrowly funnel-shaped, 6–7(–11) mm. long, 3.5 mm. wide at the mouth, with a ring of hairs inside 2.5–3 mm. above the base; lobes oblong-lanceolate, 3–6 mm. long, 1.2–2.2 mm. wide.
    Filaments
    Filaments 1–3.5 mm. long.
    Pistil
    Style exserted 1.5–6 mm., finely papillate; stigma capitate, ± 7 mm. wide.
    Fruits
    Capsule subglobose, 3.5–5 mm. long, 2.5 mm. wide, crowned with the calyx-lobes, opening right out, the valves joined only at the base, almost circular in outline, convex, 3.5 mm. long, 4 mm. wide, glabrous, transversely wrinkled; septum persistent, shiny.
    Seeds
    Seeds dark brown to black, oblong-ellipsoid, 3–3.6 mm. long, 1.5 mm. wide, 1.3 mm. thick, shining, very finely reticulate, with a ventral groove and a conical yellowish basal appendage (elaeosome) 1.1–1.5 mm. long.
    Figures
    Fig. 51/28, p. 344.
    Habitat
    Ditches, grassland and woodland; 1050–1920 m.
    Distribution
    T4 T7

    Distribution

    Native to:

    Malawi, Tanzania, Zambia, Zaïre

    Synonyms

    Other Data

    Spermacoce congensis (Bremek.) Verdc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Bidgood, S. [5867], Tanzania K000468558

    Bibliography

    First published in Kew Bull. 30: 308 (1975)

    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: 308 (1975).

    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 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