Family:
Polygonaceae Juss.
Genus:
Oxygonum Burch. ex Campd.
Species:
Oxygonum dregeanum Meisn.

Oxygonum dregeanum var. lobophyllum Germish.

This variety is accepted, and its native range is E. Zimbabwe to Eswatini.

[FZ]

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

Morphology Reproductive morphology Fruits
Nut 9 × 3 mm, ovoid, without spines, ± velutinous. Nut 5–10 × 2–3(4) mm long, ovoid, without spines, glabrous to thickly pubescent.
Ecology
Coastal savannas on sandy soils; below 100 m. Banks of streams and rivers; 1000–1400 m. Grasslands, on sandy banks at roadsides, woodland; 750–1600 m.
Morphology General Habit
A long-lived perennial herb Robust spreading decumbent perennial herb, much branched from a long thick red vertical rootstock
Morphology Stem
Stem erect, up to 50 cm tall, arising from a vertical woody rootstock
Morphology Leaves
Leaves subsessile, ± fleshy, tapering to a short petiole; lamina 25 × 2–5 mm, linear to narrowly elliptic, entire to rarely sinuous or with short lobes near the base, ± glabrous Leaves sessile; lamina (8)13–32 × (1.5)3–12 mm long, elliptic to narrowly obovate, acuminate, ending in a stiff tip, crisped on the margins Leaves shallowly lobed; lobes usually wider than 2 mm; lobes not ending in a slender tip.
Morphology Leaves Ocrea
Ocrea up to 4 mm long, lobed; lobes ending in slender setae longer than the tubular part Ocrea membranous, 4–5 mm long, lobed, reddish-brown, densely hairy with white velutinous appressed hairs; lobes 3–4.5 mm long, ending in a narrow red tip
Morphology Reproductive morphology Flowers
Flowers 2–3 in axils of cuspidate bracts forming long slender and lax racemes; perianth white, pink or pale yellow; lobes 3–6 mm long Flowers in fascicles in axils of cup-shaped bracts forming short racemes up to 10 cm long; perianth white
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers bluish
Note
Its reported presence in South Africa (Graham in Kew Bull. 12: 167 (1957)) was not confirmed in the taxonomic revision of this species by Germishuizen in Bothalia 18: 173–181 (1988). Likewise it was not possible to prove the presence of Oxygonum dregeanum subsp. lanceolatum Germish. in the Flora Zambesiaca area, since the diagnostic characteristics of this subspecies are not sufficiently well defined with respect to the other taxa recognized within Oxygonum dregeanum.
Distribution
Also in Tanzania, Angola and possibly South Africa (see note below). Mozambique Zimbabwe Also in South Africa (KwaZulu-Natal). Also in South Africa (Limpopo and Mpumalanga Provinces). Zambia Mozambique Mozambique ZIM E, MOZ MS, MOZ GI, ZAM B, ZAM N, ZAM C, ZAM S, ZIM N, ZIM W, ZIM C, ZIM E, ZIM S, MOZ MS Zimbabwe

Native to:

Mozambique, Northern Provinces, Swaziland, Zimbabwe

Oxygonum dregeanum var. lobophyllum Germish. appears in other Kew resources:

First published in Bothalia 18: 177 (1988)

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 18: 177, fig. 10 (1988).

Kew Backbone Distributions

  • 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.

  • 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