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Acacia auriculiformis A. Cunn. ex Benth.
| Family Name: | Fabaceae (Leguminosae) |
| Common Name: | Acacia-tree, Earleaf Acacia, Black Wattle, Wattle, Bunga Siam, Akasia Kuning, Yellow Wattle, Ear-pod Wattle, Northern Black Wattle, Papua Wattle, 大叶相思, 耳叶相思 |
Name
Classifications and Characteristics
| Plant Division | Angiosperms (Flowering Seed Plants) |
|---|---|
| Plant Growth Form | Tree (Medium (16m-30m)) |
| Lifespan (in Singapore) | Perennial |
| Mode of Nutrition | Autotrophic |
| Plant Shape | Irregular |
| Maximum Height | 30 m |
Biogeography
| Native Distribution | Indonesia, New Guinea, Northern Australia |
|---|---|
| Preferred Climate Zone | Tropical |
Description and Ethnobotany
| Others - Plant Morphology | Tree only has leaves at seedling stage. Leaves reduced to flattened leaf stalks called phyllodes, an adaptation to drought and hot climate. Phyllodes are green and serve as leaves. Grown on wastelands as it contains nitrogen-fixing bacteria which can rejuvenate soils poor in nutrients. Prevents soil erosion due to extensive dense roots and heavy leaf litter. Popularity waning in Singapore due to large amount of fallen leaves. |
|---|---|
| Ethnobotanical Uses | Food (Herb or Spice) Others: Ornamental plant which is also used for charcoal. Root decoction used to treat aches, pains and sore eyes. Bark infusion used to treat rheumatism. |
Landscaping Features
| Desirable Plant Features | Ornamental Flowers, Fragrant (Flowers) (Day) |
|---|---|
| Landscape Uses | Coastal, General, Shade Providing Tree / Palm |
Fauna, Pollination and Dispersal
| Fauna Pollination Dispersal Associated Fauna | Bird-Attracting |
|---|---|
| Pollination Method(s) | Biotic (Fauna) (Insects (Bee), Insects (Butterfly, Moth), Insects (Ant, Beetle, Fly, Thrip, Wasp)) |
| Seed or Spore Dispersal | Abiotic (Explosive Dehiscence), Biotic (Fauna) |
Plant Care and Propagation
| Light Preference | Full Sun |
|---|---|
| Water Preference | Moderate Water |
| Plant Growth Rate | Fast |
| Rootzone Tolerance | Poor Infertile Soils, Waterlogged Soils (Drains Site), Saline Soils / Salt Spray, Alkaline high pH Soils, Disease / Pest Resistant, Drought Tolerant |
| Maintenance Requirements | Moderate |
| Diseases | No major problems except for insect and nematode attacks on seedlings. |
| Pest(s) | Associated with, Nematodes |
| Propagation Method | Seed, Stem Cutting |
| Planting Distance | 2 |
Foliar
| Foliage Retention | Evergreen |
|---|---|
| Mature Foliage Colour(s) | Green |
| Mature Foliage Texture(s) | Raised / Sunken Veins |
| Foliar Modification | Reduced / Needle-like |
| Foliar Type | Simple / Unifoliate |
| Foliar Shape(s) | Non-Palm Foliage (Elliptical, Falcate / Curved) |
| Foliar Venation | Parallel |
| Foliar Margin | Entire |
| Foliar Apex - Tip | Acute |
| Typical Foliar Area | Notophyll ( 20.25cm2 - 45 cm2 ) |
| Leaf Area Index (LAI) for Green Plot Ratio | 3.0 (Tree - Intermediate Canopy) |
Non - Foliar and Storage
| Trunk Type (Non Palm) | Woody |
|---|---|
| Stem Type & Modification | Woody, Cladode |
Floral (Angiosperm)
| Flower & Plant Sexuality | Bisexual Flowers |
| Flower Colour(s) | Yellow / Golden |
|---|---|
| Inflorescence Type | Raceme |
| Flowering Period | Free-Flowering |
| Flowering Habit | Polycarpic |
Fruit, Seed and Spore
| Mature Fruit Colour(s) | Brown |
|---|---|
| Fruit Classification | Simple Fruit |
| Fruit Type | Dehiscent Dry Fruit , Legume / Pod |
Image Repository
Others
| Master ID | 1400 |
|---|---|
| Species ID | 2693 |
| Flora Disclaimer | The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes. |
