Acacia glauca

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Abelmoschus moschatus
Acacia aneura
Acacia angustissima
Acacia aulacocarpa
Acacia auriculiformis
Acacia catechu
Acacia cincinnata
Acacia crassicarpa
Acacia elatior
Acacia erioloba
Acacia etbaica
Acacia ferruginea
Acacia glauca
Acacia holosericea
Acacia karroo*
Acacia koa
Acacia laeta
Acacia lahai
Acacia leptocarpa
Acacia leucophloea
Acacia mangium
Acacia mearnsii*
Acacia melanoxylon
Acacia mellifera
Acacia nilotica subsp nilotica
Acacia pachycarpa
Acacia pennatula
Acacia polyacantha ssp. polyacantha
Acacia saligna
Acacia senegal
Acacia seyal
Acacia sieberiana
Acacia tortilis
Acacia xanthophloea
Acrocarpus fraxinifolius
Adansonia digitata
Adenanthera pavonina
Aegle marmelos
Afzelia africana
Afzelia quanzensis
Agathis macrophylla
Agathis philippinensis
Ailanthus altissima
Ailanthus excelsa
Ailanthus triphysa
Albizia adianthifolia
Albizia amara
Albizia anthelmintica
Albizia chinensis
Albizia coriaria
Albizia ferruginea
Albizia gummifera
Albizia julibrissin
Albizia lebbeck
Albizia odoratissima
Albizia procera
Albizia saman
Albizia versicolor
Albizia zygia
Aleurites moluccana
Allanblackia floribunda
Allanblackia stuhlmannii
Allanblackia ulugurensis
Alnus acuminata
Alnus cordata
Alnus japonica
Alnus nepalensis
Alnus rubra
Alphitonia zizyphoides
Alstonia boonei
Alstonia congensis
Alstonia scholaris
Altingia excelsa
Anacardium occidentale
Andira inermis
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Anogeissus latifolia
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Antiaris toxicaria
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Araucaria bidwillii
Araucaria cunninghamii
Arbutus unedo
Areca catechu
Arenga pinnata
Argania spinosa
Artemisia annua
Artocarpus altilis
Artocarpus camansi
Artocarpus heterophyllus
Artocarpus integer
Artocarpus lakoocha
Artocarpus mariannensis
Asimina triloba
Ateleia herbert-smithii
Aucomea klaineana
Averrhoa bilimbi
Averrhoa carambola
Azadirachta excelsa
Azadirachta indica
Azanza garckeana
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Local names:
English (wild dividivi,redwood), French (amourette), Javanese (mlanding sabrang,mlanding merah)

Acacia glauca is an erect, unarmed shrub or small tree, 1-3(-5) m tall; crown open, branches many, terete, sparsely pubescent to glabrous, younger twigs more strigose; bark dark red.

Leaves bipinnately or sometimes tripinnately compound, pinnae in 2-10 pairs, 4-9 cm long, rachis 8-12 cm long, glandless; leaflets 10-30 pairs per pinna, opposite, oblong-lanceolate, 4-10 mm x 1-2 mm, unequal sided, base rounded, top blunt with acute tip, hairy to glabrescent; stipules lanceolate, early caducous.

Inflorescence a short, sometimes subcapitate, 20-40-flowered spike, 2-6 together in upper axils, the uppermost arranged in racemes; peduncle up to 2.5 cm long, pedicel 1-2 mm, articulated; flowers 5-merous, bisexual, white turning yellowish; calyx campanulate, 0.5-1 mm long, 5-lobed; corolla tubular, 5-lobed, 2-4 mm long; stamens numerous, ovary stipitate with 5 mm long style.

Fruit a flat, membranous pod, oblong to strap-shaped, 1.5-10 cm x 0.5-2 cm, stalk about 1 cm long, apiculate, glossy brown, 1-8 seeded, valves swollen where seeds develop, transversely veined along the margins.

Seeds ovoid to lenticular, brown.

The generic name ‘acacia’ comes from the Greek word ‘akis’, meaning point or barb.

Ecology

A. glauca occurs in secondary vegetation, especially on limestone, but also on non-calcareous soils. It prefers dry climate and even grows where rainfall is as low as 200-500 mm and relative humidity 55-70 %. It performs poorly under low temperature and does not tolerate frost and shade.

Native range
Barbados

Tree management

A. glauca extends itself by root suckers from the comparatively superficial root system. It can reach a height of about 3 m and diameter of 3 cm in 13 months. Growth is robust in the juvenile phase is often stronger than in Leucaena leucocephala but loses this advantage after 6 months. The plant tolerates heavy pruning.

There are 91 000 seeds/kg. Germination is irregular unless seeds are scarified or treated with hot water.

A. glauca occurs in secondary vegetation, especially on limestone, but also on non-calcareous soils. It prefers dry climate and even grows where rainfall is as low as 200-500 mm and relative humidity 55-70 %. It performs poorly under low temperature and does not tolerate frost and shade.

Propagation is by seed or by root suckers.

It is mainly used to rehabilitate degraded and denuded lands.

Erosion control:  A. glauca is planted as a stabilizer of terrace ridges.

It is used as forage in Timor and seeds are fed to chicken in Java. It has been used as a host plant for the lac insect in Java. Analysis of Indonesian leaves gave 27% crude protein.

The wood is suitable for fuel.

Timber:  Wood is used for making household tools.

Medicine: An infusion of the roots or leaves in vinegar and of the bark in water is used as a gargle to relieve sore throat and alleviate oral inflammations in the Caribbean. A decoction of peeled branches with vinegar is taken as a cough remedy.

Ornamental:  The tree is a common ornamental throughout the tropics.

Soil improver:  It performs very well on poor soils and in view of its unpalatability to livestock, its use as an alternative to L. leucocephala as a shrub legume deserves wider attention.

Intercropping:  It was originally planted as an undershrub in teak plantations in Indonesia.