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Ficus variifolia Warb.

Protologue
Ann. Mus. Congo, Bot., sér. 6, 1: 30, t. 15 (1904).
Family
Moraceae
Synonyms
Ficus zenkeri Mildbr. & Burret (1911), Ficus bongouanouensis A.Chev. (1917).
Vernacular names
Mvumo (Sw).
Origin and geographic distribution
Ficus variifolia is distributed from Guinea to Uganda, Tanzania and Cabinda (Angola).
Uses
The wood is locally used for carving. It is also considered suitable for joinery, light carpentry, ship and boat building, agricultural implements, toys and novelties, boxes and crates, matches, plywood, hardboard and particle board. In Tanzania the tree is commonly used for shade and grave marks. In DR Congo the inner bark is made into reddish barkcloth. In hunting rituals the charcoal of the wood is rubbed into incisions made on the body.
Properties
The heartwood is whitish yellow or pale yellowish brown, sometimes slightly pinkish; it is not clearly demarcated from the sapwood. The grain is straight, texture coarse and even. Latex is present in the wood. The wood is lightweight and soft. At 12% moisture content, the density is about 400 kg/m³, modulus of rupture 61 N/mm², modulus of elasticity 5900 N/mm², compression parallel to grain 34 N/mm², cleavage 10 N/mm and Chalais-Meudon hardness 1.2.
The wood saws easily and rapidly. It planes well, but finish is not first-class. It may split on nailing, but it peels, slices and glues well, producing good plywood. The wood is not durable; it is susceptible to attack by fungi and marine borers, and moderately resistant to attack by termites and pinhole borers. The heartwood is permeable to moderately resistant to impregnation by preservatives, the sapwood is permeable.
In the leaves, flavonol O-glycosides, flavone C-glycosides and, in a few specimens, flavone-O-glycosides have been identified.
Botany
Medium-sized to fairly large tree up to 35 m tall; bole straight, branchless for up to 27 m, up to 60 cm in diameter, buttressed; bark smooth, with white latex. Leaves arranged spirally, but almost distichous, simple; stipules c. 0.5 cm long, caducous; petiole 1–5 cm long, hairy; blade oblong to elliptical or ovate, 5–20 cm × 2–11.5 cm, base cordate to rounded, apex acute to acuminate, margin entire, but irregularly lobed to divided in juvenile plants, pinnately veined with (5–)7–14 pairs of lateral veins. Inflorescence a fig, the flowers enclosed within, figs solitary or in pairs in the leaf axils, globose to ovoid, 1–2 cm in diameter, minutely hairy, yellow at maturity; peduncle up to 1 cm long. Flowers unisexual, sessile, with 2–3-lobed perianth; male flowers with 1 stamen; female flowers with 1-celled ovary and short or long style. Fruit an oblong-ellipsoid achene c. 1 mm long, 1-seeded, developing within the fig.
In Gabon Ficus variifolia is pollinated by the wasp Dolichoris flabellata.
Ficus comprises about 750 species, with about 100 species in Africa, 500 species in tropical Asia and Australia and 150 species in tropical America.
Ecology
Ficus variifolia occurs in humid evergreen forest and periodically inundated forest, but also in drier forest and as a pioneer in cleared sites, from sea-level in West Africa to 1300 m altitude in East Africa.
Management
Logs must be processed immediately after felling or be treated with preservatives.
Genetic resources and breeding
In view of its wide distribution and wide range of habitats, Ficus variifolia seems not to be threatened by genetic erosion.
Prospects
The wood of Ficus variifolia is a useful source of wood for local applications, but presently of little commercial value because of its poor durability. It may offer prospects for plywood production on a more commercial basis.
Major references
• Berg, C.C. & Hijman, M.E.E., 1989. Moraceae. In: Polhill, R.M. (Editor). Flora of Tropical East Africa. A.A. Balkema, Rotterdam, Netherlands. 95 pp.
• Berg, C.C., Hijman, M.E.E. & Weerdenburg, J.C.A., 1984. Moraceae. Flore du Gabon. Volume 26. Muséum National d’Histoire Naturelle, Paris, France. 276 pp.
• Bolza, E. & Keating, W.G., 1972. African timbers: the properties, uses and characteristics of 700 species. Division of Building Research, CSIRO, Melbourne, Australia. 710 pp.
• Fouarge, J. & Gérard, G., 1964. Bois du Mayumbe. Institut National pour l’Etude Agronomique du Congo (INEAC), Brussels, Belgium. 579 pp.
• Hawthorne, W. & Jongkind, C., 2006. Woody plants of western African forests: a guide to the forest trees, shrubs and lianes from Senegal to Ghana. Kew Publishing, Royal Botanic Gardens, Kew, United Kingdom. 1023 pp.
Other references
• Berg, C.C., Hijman, M.E.E. & Weerdenburg, J.C.A., 1985. Moraceae (incl. Cecropiaceae). Flore du Cameroun. Volume 28. Muséum National d’Histoire Naturelle, Paris, France. 298 pp.
• Burkill, H.M., 1997. The useful plants of West Tropical Africa. 2nd Edition. Volume 4, Families M–R. Royal Botanic Gardens, Kew, Richmond, United Kingdom. 969 pp.
• Dechamps, R., 1974. L’identification anatomique des bois utilisés pour des sculptures en Afrique. IV. La sculpture Luba. Africa Tervuren 20(1): 15–21.
• Greenham, J.R., Grayer, R.J., Harborne, J.B. & Reynolds, V., 2007. Intra- and interspecific variations in vacuolar flavonoids among Ficus species from the Budongo Forest, Uganda. Biochemical Systematics and Ecology 35(2): 81–90.
• Hauman, L., Lebrun, J. & Boutique, R., 1948. Moraceae. In: Robyns, W., Staner, P., De Wildeman, E., Germain, R., Gilbert, G., Hauman, L., Homès, M., Lebrun, J., Louis, J., Vanden Abeele, M. & Boutique, R. (Editors). Flore du Congo belge et du Ruanda-Urundi. Spermatophytes. Volume 1. Institut National pour l’Étude Agronomique du Congo belge, Brussels, Belgium. pp. 52–176.
• Keay, R.W.J., 1958. Moraceae. In: Keay, R.W.J. (Editor). Flora of West Tropical Africa. Volume 1, part 2. 2nd Edition. Crown Agents for Oversea Governments and Administrations, London, United Kingdom. pp. 593–616.
• Lovett, J.C., Ruffo, C.K., Gereau, R.E. & Taplin, J.R.D., 2006. Field guide to the moist forest trees of Tanzania. [Internet] Centre for Ecology Law and Policy, Environment Department, University of York, York, United Kingdom. http://www.york.ac.uk/ res/celp/webpages/projects/ecology/ tree%20guide/guide.htm. Accessed November 2007.
• Normand, D., 1950. Atlas des bois de la Côte d’Ivoire. Tome 1. Centre Technique Forestier Tropical, Nogent-sur-Marne, France. 148 pp.
• Terashima, H. & Ichikawa, M., 2003. A comparative ethnobotany of the Mbuti and Efe hunter-gatherers in the Ituri forest, Democratic Republic of Congo. African Study Monographs 24(1–2): 1–168.
• White, L. & Abernethy, K., 1997. A guide to the vegetation of the Lopé Reserve, Gabon. 2nd edition. Wildlife Conservation Society, New York, United States. 224 pp.
Author(s)
M. Brink
PROTA Network Office Europe, Wageningen University, P.O. Box 341, 6700 AH Wageningen, Netherlands


Editors
D. Louppe
CIRAD, Département Environnements et Sociétés, Cirad es-dir, Campus international de Baillarguet, TA C-DIR / B (Bât. C, Bur. 113), 34398 Montpellier Cedex 5, France
A.A. Oteng-Amoako
Forestry Research Institute of Ghana (FORIG), University P.O. Box 63, KNUST, Kumasi, Ghana
M. Brink
PROTA Network Office Europe, Wageningen University, P.O. Box 341, 6700 AH Wageningen, 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
J.R. Cobbinah
Forestry Research Institute of Ghana (FORIG), University P.O. Box 63, KNUST, Kumasi, Ghana

Correct citation of this article:
Brink, M., 2008. Ficus variifolia Warb. In: Louppe, D., Oteng-Amoako, A.A. & Brink, M. (Editors). Prota 7(1): Timbers/Bois d’œuvre 1. [CD-Rom]. PROTA, Wageningen, Netherlands.