PROTA homepage Prota 7(1): Timbers/Bois d’œuvre 1
Record display


Adenanthera mantaroaVilliers

Protologue
Bull. Mus. natl. Hist. nat., sect. B, Adansonia 16: 227 (1995).
Family
Mimosaceae (Leguminosae - Mimosoideae)
Origin and geographic distribution
Adenanthera mantaroa is endemic to Madagascar, where it occurs in the northern and eastern parts.
Uses
The wood is used locally for construction and canoes.
Botany
Medium-sized to fairly large tree up to 30 m tall; bole straight, up to 100 cm in diameter; bark scaly, reddish brown; young branches sparsely pubescent. Leaves alternate, bipinnately compound with (3–)4–6 pairs of pinnae, these alternate to opposite; stipules triangular, c. 2 mm long, caducous; petiole (2.5–)4–9 cm long, rachis (4–)6–22 cm long, grooved and slightly pubescent above; leaflets 11–15 per pinna, alternate, shortly stalked, oblong to broadly elliptical, up to 3 cm × 1.5 cm, rounded at base and apex, almost glabrous. Inflorescence an axillary raceme (5–)10–20 cm long, many-flowered. Flowers bisexual, regular, 5-merous, yellow; pedicel 2–4 mm long, with joint near base; calyx shortly obconical, 1.5–2 mm long, glabrous, with short lobes; petals free, elliptical, 3–4 mm long, reflexed; stamens 10, free, anthers with a stalked gland at apex; ovary superior, shortly stalked, narrowly oblong, glabrous, style c. 3.5 mm long. Fruit a narrowly oblong to linear and sickle-shaped pod (10–)20–30 cm × 1.5 cm, flattened, stalked, with thickened margins, glabrous, yellowish, silky, dehiscent with 2 valves, up to 15-seeded. Seeds flattened ellipsoid, 8–11 mm × 6–8 mm, black in the lower part and red-orange in the upper part.
Adenanthera comprises about 12 species, which are all indigenous to tropical Asia and northern Australia, except Adenanthera mantaroa. Two species are occasionally planted as an ornamental and roadside tree in tropical Africa: Adenanthera microsperma Teijsm. & Binn. and Adenanthera pavonina L. The latter species occurs occasionally naturalized in Madagascar; it differs in its leaflets that are pubescent below and in its completely red mature seeds.
Ecology
Adenanthera mantaroa occurs in evergreen forest up to 1100 m altitude. It is found on lateritic soils.
Genetic resources and breeding
In general Adenanthera mantaroa is uncommon, but it is locally abundant, e.g. around the Bay of Antongil.
Prospects
Very little is known about this recently described species. In view of its scattered occurrence and restricted distribution, harvesting the timber from wild stands should be discouraged. Planting experiments may clarify the possibilities as a plantation timber. The wood properties should be investigated and might be good, as is the case with several Asiatic Adenanthera species.
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
• Villiers, J.-F., 1995. Une nouvelle espèce du genre Adenanthera L. (Leguminosae, Mimosoideae) à Madagascar. Bulletin du Muséum National d’Histoire Naturelle, 4e série, 16, section B, Adansonia ( 2–4): 227–230.`.
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., 2006. Adenanthera mantaroaVilliers. In: Louppe, D., Oteng-Amoako, A.A. & Brink, M. (Editors). Prota 7(1): Timbers/Bois d’œuvre 1. [CD-Rom]. PROTA, Wageningen, Netherlands.