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Oxygonum salicifolium Dammer

Protologue
Engl., Pflanzenw. Ost-Afrikas, C: 171 (1895).
Family
Polygonaceae
Vernacular names
Bamba, kindiri (Sw)
Origin and geographic distribution
Oxygonum salicifolium is only found in Kenya and Tanzania.
Uses
In the coastal area of Kenya the leaves of Oxygonum salicifolium are used as a cooked vegetable, often mixed with Amaranthus or other vegetable species to improve the taste.
Botany
Creeping herb with ascending or prostrate woody branches bearing pubescent shoots up to 35 cm long. Leaves alternate, simple, sessile; ocrea cylindrical, up to 1 cm long, bearing at apex red hairs up to 9 mm long; blade linear-lanceolate, 3–7 cm × 2–10 mm, base narrowed, apex acute and often mucronate, margin not or slightly sinuous, midrib prominent below. Inflorescence a spike-like raceme, slender, 12–20 cm long. Flowers bisexual and male; bisexual flowers tubular with perianth tube accrescent around ovary and with perianth lobes withering; male flowers with a very short perianth tube and 4–5 petaloid tepals 4–6 mm long; stamens 8 in 2 series, 5 outer adnate to the tepals near their bases, 3 inner with a flattened basis forming a ring around the base of the style, filaments 4 mm long; styles 3, free or adnate at base, stigmas capitate. Fruit a pubescent nut c. 1 cm long, bearing subcentrally 3 prickles each 3–4 mm long.
Oxygonum comprises about 30 species and is confined to tropical Africa, South Africa and Madagascar.
Ecology
Oxygonum salicifolium grows in grassland and disturbed ground, from sea-level up to 1600 m altitude.
Management
Oxygonum salicifolium is only collected from the wild and is not cultivated.
Genetic resources and breeding
Although Oxygonum salicifolium is not widespread, it is common in disturbed habitats and not in danger of genetic erosion.
Prospects
Oxygonum salicifolium will only remain of minor and local importance as a vegetable.
Major references
• Graham, R.A., 1957. A revision of Oxygonum (Polygonaceae – Polygoneae). Kew Bulletin 12: 145–172.
• Maundu, P.M., Ngugi, G.W. & Kabuye, C.H.S., 1999. Traditional food plants of Kenya. Kenya Resource Centre for Indigenous Knowledge (KENRIK), Nairobi, Kenya. 270 pp.
Other references
• Graham, R.A., 1958. Polygonaceae. In: Turrill, W.B. & Milne-Redhead, E. (Editors). Flora of Tropical East Africa. Crown Agents for Oversea Governments and Administrations, London, United Kingdom. 40 pp.
Author(s)
P.C.M. Jansen
PROTA Network Office Europe, Wageningen University, P.O. Box 341, 6700 AH Wageningen, Netherlands


Editors
G.J.H. Grubben
Prins Hendriklaan 24, 1401 AT Bussum, Netherlands
O.A. Denton
National Horticultural Research Institute, P.M.B. 5432, Idi-Ishin, Ibadan, Nigeria
Associate Editors
C.-M. Messiaen
Bat. B 3, Résidence La Guirlande, 75, rue de Fontcarrade, 34070 Montpellier, France
R.R. Schippers
De Boeier 7, 3742 GD Baarn, Netherlands
General editors
R.H.M.J. Lemmens
PROTA Network Office Europe, Wageningen University, P.O. Box 341, 6700 AH Wageningen, Netherlands
L.P.A. Oyen
PROTA Network Office Europe, Wageningen University, P.O. Box 341, 6700 AH Wageningen, Netherlands

Correct citation of this article:
Jansen, P.C.M., 2004. Oxygonum salicifolium Dammer In: Grubben, G.J.H. & Denton, O.A. (Editors). PROTA 2: Vegetables/Légumes. [CD-Rom]. PROTA, Wageningen, Netherlands.