Acacia stricta (Andrews) Willd.

Species

Angiosperms > Fabales > Fabaceae > Acacia

Characteristics

Shrub or tree 1–5 m high, often suckering. Branchlets angled towards extremities, striate with yellowish resin ribs, glabrous. Phyllodes ascending to erect, normally linear to linear-oblanceolate or narrowly elliptic, straight to incurved or shallowly recurved, 3.5–14 cm long, 3–10 (–15) mm wide, narrowed at base, obtuse, thin, glabrous, dull, green to grey-green or subglaucous, with prominent resinous often mealy midrib, occasionally 2-veined per face, closely reticulately penninerved. Inflorescences normally simple and 2–4 per axil; peduncles 2-5 mm long, glabrous, slightly viscid; basal bract persistent; heads globular to obloid, 20–38-flowered, cream to lemon yellow, sometimes light golden; young buds mealy. Flowers 5-merous; sepals united to near their apices. Pods linear, to 7 cm long, 2–4 mm wide, firmly chartaceous to thinly coriaceous, light brown, glabrous. Seeds longitudinal, oblong-elliptic, 3–4.5 mm long, shiny, dark brown; aril terminal.
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Unarmed shrub to c. 5 m high. Branchlets angular, with yellowish resinous ribs. Phyllodes linear-spathulate, gradually tapered to the base, apex abruptly contracted, obtuse, apiculate; main vein and margins prominent, resinous, sometimes a faint second longitudinal nerve present for a short distance on the adaxial side, and conspicuously, closely reticulately penniveined, 7.5-10.5 by 0.6-0.9 (-1.7) cm, (6-)9—13 times as long as wide, gland prominent, close to the base. Flowering heads composed of c. 25 flowers in clusters (condensed racemes with very short rachis) of 2-7 in the axils of the phyllodes. Pod linear, ± straight, slightly glutinous, with thickened margins, to 7 by c. 2.5 cm. Seeds longitudinal, 3.5 by 1.5 mm; pleurogram large, open; funicle intricately folded, forming an aril half as long as the seed below the seed.
It is an evergreen tree. It grows to 4 m high and spreads to 4 m across. The stem is erect and stiff. It has a spreading crown. The branches are angular and point upwards. The leaves (phyllodes) are dull green. They are 4-12 cm long by 0.3-0.8 cm wide and thick. The tip of the leaf can be blunt or with a small sharp point. The leaf normally has one prominent vein and fine side veins. The leaf is narrowed towards the base. There is also a gland near the base. The flowers are deep yellow balls about 0.5 cm across. They are in small clusters in the leaf axils. The flower heads have 50-60 small flowers. The pods are straight and flat. They are about 7 cm long and light brown. They are 0.4-1 cm wide and not constricted between the seeds.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 4.0
Mature height (meter) 2.5 - 4.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

It is a temperate plant. It grows naturally in south eastern parts of Australia. It prefers light to heavy soils. It requires an open sunny position. It needs reasonably good rainfall. It is frost resistant. It needs fairly well drained soils. In Tasmania it is common and widespread in pastures and dry places. Tasmania Herbarium. Arboretum Tasmania.
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Grows in sand or sandy clay in Eucalyptus forest or woodland, or open scrub with heath understorey, often in moist sites.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

The seeds are eaten green.
Uses -
Edible seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It is grown from seed. The seed need treatment to break the hard seed coat. Normally this is by putting the seeds in very hot water and letting the water cool down overnight then planting the seeds immediately. It can also be grown from cuttings.
Mode cuttings seedlings
Germination duration (days) 21
Germination temperacture (C°) 21 - 26
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Acacia stricta unspecified picture

Distribution

Acacia stricta world distribution map, present in Australia, India, and New Zealand

Conservation status

Acacia stricta threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:471561-1
WFO ID wfo-0000185325
COL ID 8Q4K
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Mimosa stricta Phyllodoce stricta Acacia emarginata Racosperma strictum Racosperma strictum Acacia stricta var. binervis Acacia stricta var. pleiocephala Acacia stricta