Oxygonum tenerum Milne-Redh.

This species is accepted, and its native range is S. DR Congo to W. Zambia.

[FZ]

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

Type
Type:Zambia, Mwinilunga, sandy plain east of Mwinilunga, Milne-Redhead 1115 (K, holotype).
Morphology Leaves Ocrea
Ocrea 10–12 mm long, chartaceous, truncate and fringed at the apex with light brown setae 5–10 mm long Ocrea 10–12 mm long, chartaceous, truncate and fringed at the apex with light brown setae 5–10 mm long.
Morphology Reproductive morphology Flowers
Hermaphrodite flowers heterostylous, long-styled flowers not seen; perianth 4–5-lobed; tube c. 4 mm long; lobes white to rose, c. 6 mm long, oblong-lanceolate Male flowers not seen Flowers pedicellate, 3–4 in the axils of bracts, arranged in terminal spiciform racemes up to 30 cm long; bracts up to 6 mm long, truncate, produced dorsally into an acute or acuminate setose apex with a terminal fringe of 2–3 setae; pedicels up to 7 mm long, filiform Flowers pedicellate, 3–4 in the axils of bracts, arranged in terminal spiciform racemes up to 30 cm long; bracts up to 6 mm long, truncate, produced dorsally into an acute or acuminate setose apex with a terminal fringe of 2–3 setae; pedicels up to 7 mm long, filiform. Male flowers not seen. Hermaphrodite flowers heterostylous, long-styled flowers not seen; perianth 4–5-lobed; tube c. 4 mm long; lobes white to rose, c. 6 mm long, oblong-lanceolate.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments c. 1–2 mm long, filiform and flattened to the base; anthers brownish-rose, c. 1 mm long
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary c. 1 mm long; styles of the long-styled flowers c. 3.5 mm long; styles of the short-styled flowers c. 1 mm long
Morphology Reproductive morphology Fruits
Nut yellowish-brown, 7 × 4 mm, ovoid, trigonous. Nut yellowish-brown, 7 × 4 mm, ovoid, trigonous.
Ecology
Edge of sandy flood plains in Kalahari Sand, after early burning, growing on burnt ground and sandy soils in open situations; c. 1350–1450 m.
Distribution
Also in Dem. Rep. Congo. ZAM W Zambia
Morphology General Habit
A perennial herb with a woody rootstock creeping underground. A perennial herb with a woody rootstock creeping underground
Morphology General Shoots
Flowering shoots annual, many, 8–10 cm long, leafless, arising from the rootstock; lateral shoots leafy, arising from the axils of ocreiform cataphylls of the flowering shoots. Flowering shoots annual, many, 8–10 cm long, leafless, arising from the rootstock; lateral shoots leafy, arising from the axils of ocreiform cataphylls of the flowering shoots
Morphology Leaves
Leaves dark green to yellowish when dry, sessile, 45–50 × 0.75–1 mm, linear-lanceolate to needle-shaped, acute and apiculate at the apex, narrowly cuneate to the base, revolute on the margin. Leaves dark green to yellowish when dry, sessile, 45–50 × 0.75–1 mm, linear-lanceolate to needle-shaped, acute and apiculate at the apex, narrowly cuneate to the base, revolute on the margin
sex Male
Male flowers not seen.
sex Hermaphrodite
Hermaphrodite flowers heterostylous, long-styled flowers not seen; perianth 4–5-lobed; tube c. 4 mm long; lobes white to rose, c. 6 mm long, oblong-lanceolate. Ovary c. 1 mm long; styles of the long-styled flowers c. 3.5 mm long; styles of the short-styled flowers c. 1 mm long. Filaments c. 1–2 mm long, filiform and flattened to the base; anthers brownish-rose, c. 1 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments c. 1–2 mm long, filiform and flattened to the base; anthers brownish-rose, c. 1 mm long.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary c. 1 mm long; styles of the long-styled flowers c. 3.5 mm long; styles of the short-styled flowers c. 1 mm long.

Native to:

Zambia, Zaïre

Oxygonum tenerum Milne-Redh. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Aug 29, 2013 Bingham, M.G. [13140], Zambia K000014448 No
Milne - Redhead, E. [1115], Zambia K000244063 holotype Yes

First published in Hooker's Icon. Pl. 33: t. 3216 (1933)

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

  • Bull. Jard. Bot. État 24: 4 (1954).
  • Hooker’s Icon. Pl. 33: t. 3216 (1933).
  • Kew Bull. 12: 169 (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.

  • Flora Zambesiaca

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

  • Herbarium Catalogue Specimens

    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 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