Oxygonum robustum Germish.

This species is accepted, and its native range is Mozambique to KwaZulu-Natal.

[FZ]

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

Morphology General Habit
Spreading robust perennial herb, arising from a thick vertical woody rootstock Spreading robust perennial herb, arising from a thick vertical woody rootstock.
Morphology Stem
Stems ± decumbent up to 50 cm tall, much branched from the base Stems ± decumbent up to 50 cm tall, much branched from the base.
Morphology Leaves
Leaves subsessile; lamina obovate to elliptic or spathulate 3.7–8 × 0.8–2.3 cm, acuminate and apiculate at the apex, attenuate and narrowing gradually into a petiole, entire or more rarely sharply toothed on the margins, glabrous, brown punctate; midrib prominent beneath, sometimes pubescent Leaves subsessile; lamina obovate to elliptic or spathulate 3.7–8 × 0.8–2.3 cm, acuminate and apiculate at the apex, attenuate and narrowing gradually into a petiole, entire or more rarely sharply toothed on the margins, glabrous, brown punctate; midrib prominent beneath, sometimes pubescent.
Morphology Leaves Ocrea
Ocrea 8–10 mm long, truncate and fringed with ± rigid bristles up to 10 mm long, puberulous to pilose outside, reddish-brown and brown punctate Ocrea 8–10 mm long, truncate and fringed with ± rigid bristles up to 10 mm long, puberulous to pilose outside, reddish-brown and brown punctate.
Morphology Reproductive morphology Flowers
Hermaphrodite flowers homostylous to slightly heterostylous; perianth white, tubular; tube 5 mm long; lobes up to 6 mm long Male flowers not seen Flowers 2–4, pedicellate in the axil of bracts, arranged in terminal and lateral spiciform racemes up to 30 cm long; pedicels up to 5 mm long, glabrous, articulate near the apex; bracts chartaceous, 4–8 mm long, obliquely truncate and produced dorsally into an acute subulate seta, brown punctate outside Flowers 2–4, pedicellate in the axil of bracts, arranged in terminal and lateral spiciform racemes up to 30 cm long; pedicels up to 5 mm long, glabrous, articulate near the apex; bracts chartaceous, 4–8 mm long, obliquely truncate and produced dorsally into an acute subulate seta, brown punctate outside. Male flowers not seen. Hermaphrodite flowers homostylous to slightly heterostylous; perianth white, tubular; tube 5 mm long; lobes up to 6 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 4–5 mm long; anthers up to 1 mm long, oblong, reddish-brown
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary up to 3 mm long, 3 angled; styles 3 mm, connate at the base
Morphology Reproductive morphology Fruits
Nut immature, 3 angled, up to 6 mm long, longitudinally ridged, ± narrowly winged, pubescent. Nut immature, 3 angled, up to 6 mm long, longitudinally ridged, ± narrowly winged, pubescent.
Ecology
Coastal grasslands.
Distribution
Also in South Africa (KwaZulu-Natal). Mozambique MOZ M
sex Male
Male flowers not seen.
sex Hermaphrodite
Hermaphrodite flowers homostylous to slightly heterostylous; perianth white, tubular; tube 5 mm long; lobes up to 6 mm long. Ovary up to 3 mm long, 3 angled; styles 3 mm, connate at the base. Filaments 4–5 mm long; anthers up to 1 mm long, oblong, reddish-brown.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments 4–5 mm long; anthers up to 1 mm long, oblong, reddish-brown.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary up to 3 mm long, 3 angled; styles 3 mm, connate at the base.

Native to:

KwaZulu-Natal, Mozambique

Oxygonum robustum Germish. appears in other Kew resources:

First published in Bothalia 17: 40 (1987)

Accepted by

  • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
  • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

Literature

Flora Zambesiaca

  • Bothalia 17: 40, fig. 15 (1987).

Kew Backbone Distributions

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

  • Flora Zambesiaca

    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. 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