1. Family: Polygonaceae Juss.
    1. Genus: Oxygonum Burch. ex Campd.
      1. Oxygonum sagittatum R.A.Graham

        This species is accepted, and its native range is N. Kenya.

    [FTEA]

    Polygonaceae, R. A. Graham. Flora of Tropical East Africa. 1958

    Habit
    A rather hoary, decumbent herb, probably perennial.
    Stem
    Stems greenish-brown, densely pubescent with white hairs, glabrescent with age.
    Ocrea
    Ocreae often crowded and obscuring the stem, membranous, densely pubescent, 0.7–1.2 cm. long, the leaf inserted a little above the middle, terminally truncate and fringed with pubescent, red setae 7–10 mm. long.
    Leaves
    Leaves petiolate, narrow-lanceolate, up to 2.7 × 0.6 cm., the margin entire or with 1 small sagittate lobe half way along, densely and closely hairy on both sides, very acute with an extended mucro, basally sagittate with lobes up to 6 mm. long, and below the lobes often shortly cuneate to the petiole, the margins revolute, and the midrib very prominent below.
    Petiole
    Petiole 0.6–1.2 cm. long.
    Inflorescences
    Inflorescence ± stout, elongated, often arcuate or gently so, 6–18 cm. long.
    Bracts
    Bracts 2–4 mm. long, with a dorsal seta 4 mm. and lateral setae 1–2 mm. long.
    Pedicel
    Pedicels just exceeding the bracts.
    Flowers
    Flowers 1–3 together, white flushed with pink, ± 5 mm. long; tepals oblong; long styles 4 mm. long, connate for 1.5 mm. (short styles not seen); stigmas yellow.
    Fruits
    Fruit (immature) 6 mm. long, fusiform, densely pubescent, with three prickles 1 mm. long, spreading from the centre.
    Figures
    Fig. 6/8, p. 35.
    Habitat
    In Acacia-Commiphora bushland; 1100 m.
    Distribution
    K1 not known beyond this single recordit should be sought for in the Kenya-Ethiopia boundary area

    Distribution

    Oxygonum sagittatum R.A.Graham appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 6, 1952 Gillett, J. B. [12694], Kenya K000244051 holotype
    Apr 4, 1952 Gillett, J. B. [12694], Kenya K000244050 holotype
    Kuchar, P. [15291], Kenya K000332785

    First published in Kew Bull. 12: 158 (1957)

    Accepted by

    • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.

    Literature

    Kew Backbone Distributions
    • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.
    Flora of Tropical East Africa
    • R. Grah., Kew Bulletin 1957: 158 (1957).

    Sources

    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