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

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

    [FZ]

    Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

    Type
    Type:Zambia, Kawambwa (south of Lake Mweru), Fanshawe 2982 (K, holotype; BR; NDO).
    Filaments
    Filaments 3–4 mm long, filiform, flattened toward the base; anthers red-brown, 1–1.5 × 0.5 mm, oblong
    Ovary
    Ovary 2–3 mm long; styles of long-styled flowers 6 mm long; styles of short-styled flowers 3 mm long
    Fruits
    Nut 3–4 mm long, ellipsoid trigonous, irregularly striate, pubescent. Nut 3–4 mm long, ellipsoid trigonous, irregularly striate, pubescent.
    Ecology
    In dry dambo margins, in wooded grassland, in grey sandy soil with red grit; c. 1300 m.
    Distribution
    ZAM N Known only from the Kawambwa District of northern Zambia. Zambia
    Habit
    A decumbent fleshy suffrutex; rootstock tortuous, woody. A decumbent fleshy suffrutex; rootstock tortuous, woody
    Stem
    Stems annual, longitudinally striate, ± glabrescent. Stems annual, longitudinally striate, ± glabrescent
    Leaves
    Leaves yellowish-green, ± fleshy, subsessile, (4)5–8 × 0.7–3.2 cm, elliptic to elliptic-obovate, acute or obtuse and mucronate at the apex, attenuate to the base, with the midrib prominent beneath, not or slightly sinuous on the margin. Leaves yellowish-green, ± fleshy, subsessile, (4)5–8 × 0.7–3.2 cm, elliptic to elliptic.obovate, acute or obtuse and mucronate at the apex, attenuate to the base, with the midrib prominent beneath, not or slightly sinuous on the margin
    Ocrea
    Ocrea 1.5–1.9 × 0.7–1.3 cm, with a foliaceous spreading or reflexed limb, rounded and fringed at the apex with many red-brown setae up to 3.5 mm long, otherwise ± glabrous. Ocrea 1.5–1.9 × 0.7–1.3 cm, with a foliaceous spreading or reflexed limb, rounded and fringed at the apex with many red-brown setae up to 3.5 mm long, otherwise ± glabrous
    Flowers
    Flowers pedicellate, 1–3 in the axils of each bract, arranged in lateral spiciform racemes 7–9 cm long; bracts 7–9 mm long, obliquely truncate, produced dorsally into an acute or acuminate setose apex and with a terminal fringe of short hairs, or sometimes with short setae; bracteoles 2, hyaline, c. 4.5 mm long; pedicels 4–6 mm long, filiform, glabrous. Hermaphrodite flowers heterostylous, 5-merous; perianth creamy-white, tube 1.5–2 mm long and pubescent outside, lobes 5–6 × 1.5–2 mm and oblong-lanceolate, obtuse or subacute at the apex Male flowers not seen Flowers pedicellate, 1–3 in the axils of each bract, arranged in lateral spiciform racemes 7–9 cm long; bracts 7–9 mm long, obliquely truncate, produced dorsally into an acute or acuminate setose apex and with a terminal fringe of short hairs, or sometimes with short setae; bracteoles 2, hyaline, c. 4.5 mm long; pedicels 4–6 mm long, filiform, glabrous Hermaphrodite flowers heterostylous, 5-merous; perianth creamy-white, tube 1.5–2 mm long and pubescent outside, lobes 5–6 × 1.5–2 mm and oblong-lanceolate, obtuse or subacute at the apex. Male flowers not seen.
    Male
    Male flowers not seen.
    Hermaphrodite
    Hermaphrodite flowers heterostylous, 5-merous; perianth creamy-white, tube 1.5–2 mm long and pubescent outside, lobes 5–6 × 1.5–2 mm and oblong-lanceolate, obtuse or subacute at the apex. Filaments 3–4 mm long, filiform, flattened toward the base; anthers red-brown, 1–1.5 × 0.5 mm, oblong. Ovary 2–3 mm long; styles of long-styled flowers 6 mm long; styles of short-styled flowers 3 mm long.
    Stamens
    Filaments 3–4 mm long, filiform, flattened toward the base; anthers red-brown, 1–1.5 × 0.5 mm, oblong.
    Pistil
    Ovary 2–3 mm long; styles of long-styled flowers 6 mm long; styles of short-styled flowers 3 mm long.

    Distribution

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

    Date Reference Identified As Barcode Type Status
    Apr 12, 1957 Fanshawe, D. B. [F. 2982], Zambia K000244060 holotype
    Apr 12, 1957 Fanshawe, D. B. [F. 2982], Zambia K000244061 holotype

    First published in Kew Bull. 12: 236 (1957)

    Accepted by

    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • Kew Bull. 12: 236 (1957).
    Kew Backbone Distributions
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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