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Viguieranthus kony (R.Vig.) Villiers

Protologue
Du Puy, Legum. Madagascar: 277 (2002).
Family
Mimosaceae (Leguminosae - Mimosoideae)
Synonyms
Calliandra kony R.Vig. (1949).
Origin and geographic distribution
Viguieranthus kony is endemic to the eastern part of central Madagascar.
Uses
The wood is used for joinery.
Properties
The wood is yellow-grey and dense.
Botany
Small to medium-sized tree up to 18 m tall; bole up to 30 cm in diameter; bark yellowish grey; young branches grey, glabrous. Leaves alternate, bipinnately compound with a single pair of pinnae; stipules leathery, persistent; petiole 4–12 mm long, with winged margins and gland at apex on upper side; pinna axis 1–3.5 cm long, with winged margins; leaflets 11–19 per pinna, alternate to opposite near apex, sessile, oblong-rhombic to oblong-obovate, up to 17 mm × 6 mm, asymmetrical at base, rounded to acute at apex, glabrous. Inflorescence an axillary raceme 2.5–6 cm long, solitary or in clusters, many-flowered; peduncle 2.5–3.5 cm long. Flowers bisexual, regular, 4–5-merous; calyx cup-shaped, c. 0.5 mm long, leathery; petals fused at base, (5–)6–7.5 mm long, pale greenish yellow; stamens numerous, fused at base, 14.5–18 mm long; ovary superior, stalked, hairy, 1-celled, style long and slender. Fruit not known.
Viguieranthus comprises about 23 species, 18 of them endemic to Madagascar, the remaining species in tropical Asia. The wood of several Viguieranthus species is used in Madagascar. The wood of Viguieranthus cylindricostachys Villiers, a small tree up to 15 m tall from central and eastern Madagascar, is used for construction and as firewood, that of Viguieranthus longiracemosus Villiers, a medium-sized tree up to 20 m tall from eastern Madagascar, is used in house building, and that of Viguieranthus pervillei (Drake) Villiers, a small tree up to 12 m tall from northern and eastern Madagascar, is also used for construction.
Ecology
Viguieranthus kony occurs in humid evergreen forest, from sea-level up to 1000 m altitude. It is locally common.
Genetic resources and breeding
The comparatively small distribution area of Viguieranthus kony makes it liable to genetic erosion, although it is apparently locally common. There are only a few protected forests in this area.
Prospects
Viguieranthus kony and other Viguieranthus species will remain of little local importance for their timber, being either smaller-sized trees or uncommon.
Major references
• du Puy, D.J., Labat, J.N., Rabevohitra, R., Villiers, J.-F., Bosser, J. & Moat, J., 2002. The Leguminosae of Madagascar. Royal Botanic Gardens, Kew, Richmond, United Kingdom. 750 pp.
Other references
• Lewis, G., Schrire, B., MacKinder, B. & Lock, M., 2005. Legumes of the world. Royal Botanic Gardens, Kew, Richmond, United Kingdom. 577 pp.
Author(s)
R.H.M.J. Lemmens
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:
Lemmens, R.H.M.J., 2007. Viguieranthus kony (R.Vig.) Villiers. In: Louppe, D., Oteng-Amoako, A.A. & Brink, M. (Editors). Prota 7(1): Timbers/Bois d’œuvre 1. [CD-Rom]. PROTA, Wageningen, Netherlands.