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  1. Family: Rubiaceae Juss.
    1. Genus: Spermacoce L.
      1. Spermacoce princeae (K.Schum.) Verdc.

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

    [FTEA]

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

    Habit
    Scrambling or decumbent herb with ascending branchlets, much branched, 0.3–0.6 m. long; stems often dark crimson, square, sparsely to densely hairy on the angles.
    Leaves
    Leaf-blades elliptic to ovate, 1.2–6.5 cm. long, 0.35–3 cm. wide, acute at the apex, cuneate at the base, glabrous to pubescent above, with sparse hairs to pubescent beneath and always scabrid on the margins; venation impressed, giving a bullate and plicate appearance to the blade; petiole 0–1 mm. long; stipule-base 4–6 mm. long, hairy, at least above, with 5–9 fimbriae 7–8.5 mm. long.
    Flowers
    Flowers in dense few–many-flowered axillary clusters at most nodes; fimbriae of stipuliform bracts 6 mm. long, ciliate.
    Calyx
    Calyx-tube fusiform or obconic, 1.2–3 mm. long; lobes foliaceous, lanceolate to linear-lanceolate, 3.5–5(–9) mm. long, 0.8–1 mm. wide, with pubescent margins.
    Corolla
    Corolla white; tube cylindrical or narrowly funnel-shaped, 6.5–10.5 mm. long, 0.4–2.5 mm. wide; lobes oblong or elliptic, 3–4 mm. long, 0.8–2.5 mm. wide.
    Filaments
    Filaments exserted 1–1.5 mm.
    Pistil
    Style exserted 2.5–4 mm.; stigma-lobes 0.5–1 mm. long.
    Fruits
    Capsule oblong-ellipsoid, 5–6 mm. long, 2 mm. wide, the valves opening widely, finely transversely wrinkled, glabrous or finely pubescent, crowned with the persistent calyx-lobes.
    Seeds
    Seeds dark purple-brown, fusiform, 4 mm. long, 1.6 mm. wide, 0.7–0.8 mm. thick, deeply grooved ventrally, narrowed at one end, shiny, finely rugulose and sometimes with a shallow dorsal groove as well.
    [FZ]

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

    Habit
    Scrambling or decumbent perennial herb with ascending branchlets, much branched, 0.3–1.5 m. long; stems often dark crimson, square, sparsely to densely hairy on the angles.
    Leaves
    Leaf blades 1.2–7 x 0.35–3 cm., elliptic to ovate, acute at the apex, cuneate at the base, glabrous to pubescent above, with sparse hairs to pubescent beneath and always scabrid on the margins; venation impressed, giving a bullate and plicate appearance to the blade; petiole 0–1 mm. long; stipule base 4–6 mm. long, hairy, at least above, with 5–9 fimbriae 7–8.5 mm. long.
    Flowers
    Flowers in dense few- to many-flowered axillary clusters at most nodes; fimbriae of stipuliform bracts 6 mm. long, ciliate.
    Calyx
    Calyx tube 1.2–3 mm. long, fusiform or obconic; lobes (2)4(5), foliaceous, 3.5–5(9) mm. long, 0.8–1 mm. wide, lanceolate to linear-lanceolate, with pubescent margins.
    Corolla
    Corolla white or sometimes ringed pinkish; tube (5)6.5–10.5 x 0.4–2.5 mm., cylindrical or narrowly funnel-shaped; lobes 3–4(6) x 0.8–2.5 mm., oblong or elliptic.
    Filaments
    Filaments exserted 1–1.5 mm.
    Pistil
    Style exserted 2.5–4 mm.; stigma lobes 0.5–1 mm. long.
    Fruits
    Capsule 5–6 x 2–3 mm., oblong-ellipsoid, the valves opening widely, finely transversely wrinkled, glabrous or finely pubescent, crowned with the persistent calyx lobes.
    Seeds
    Seeds dark purple-brown, 4x1.6–2 x 0.7–0.8 mm., fusiform, deeply grooved vena-ally, narrowed at one end, shiny, finely rugulose and sometimes with a shallow dorsal groove as well.

    Images

    Distribution

    Native to:

    Benin, Burundi, Cameroon, Ethiopia, Gulf of Guinea Is., Kenya, Malawi, Mozambique, Nigeria, Rwanda, Sudan, Tanzania, Togo, Uganda, Zambia, Zaïre

    Synonyms

    Other Data

    Spermacoce princeae (K.Schum.) Verdc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Boughey, A.S. [32], Bioko K000422885 holotype
    Brummitt, R.K. [14020], Zambia K000173021 holotype
    Kassner [753], Kenya K000173009 isosyntype
    Volkens, G. [413], Tanzania K000173010 isosyntype
    Milne-Redhead, E. [2933], Zambia Borreria princeae 31013.000
    Drummond, R.B. [1597], Tanzania Borreria princeae 845.000

    Bibliography

    First published in Kew Bull. 30: 307 (1975)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
    • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania. Revue de Taxonomie et de Nomenclature Botaniques 30: 1-307.
    • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984). Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.

    Literature

    Kew Backbone Distributions

    • Fischer, E., Rembold, K., Althof, A. & Obholzer, J. (2010). Annotated checklist of the vascular plants of Kakamega forest, Western province, Kenya Journal of East African Natural History 99: 129-226.
    • Ruhsam, M in Ruhsam, M. (2005). Survey of all the Rubiaceae specimens at the Royal Botanic Gardens, Kew.
    • Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984). Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.

    Flora of Tropical East Africa

    • Verdc. in Kew Bulletin 30: 307 (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.
    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