African Boxthorn - Lycium ferocissimum

Introduced as a garden or hedge plant in the mid 1800s. Now a serious weed, particularly on neglected land in arid temperate Australia. May produce thickets that become refuges for feral animals.... more

African Feather Grass - Pennisetum macrourum

Possibly introduced to Australia in hay brought back with horses after the Boer War. Spring and summer growing grass that is drought resistant, has low palatability, harbours rabbits, is a fire hazard and restricts access to watercourses. O... more

African Lovegrass - Eragrostis curvula

A variable species complex. Valued for soil conservation and fodder or regarded as a serious weed. Introduced for soil stabilisation. Common on sandy soils; capable of resisting drought and heavy grazing. Successfully competes with low grow... more

African daisy - Senecio pterophorus

Introduced to SA at Port Lincoln in ballast, in about 1930. Now well established in the Eyre Peninsula, the Adelaide Hills and south-eastern SA and present and increasing in Victoria and NSW. Cultivated as an ornamental. Readily invades are... more

African olive - Olea europaea subspecies cuspidata

A locally common weed of roadsides, neglected land and stream banks. African Olive produces fruit that are usually smaller and less fleshy than those of plants cultivated for edible olives and olive oil.... more

African tulip - Spathodea campanulata

A tree up to 20m tall with an open crown and dense dark green foliage. When mature the trunk develops characteristic buttresses. Leaves are composed of several dark green leaflets which are pale on the underside. Tight clusters of downy bud... more

African weed-orchid - Disa bracteata

The species is self-pollinating. It forms dense colonies and replaces native ground flora where it occurs in Western Australia, South Australia and Victoria. First herbarium specimens were collected in Western Australia in 1944, in South Au... more

Aleppo pine - Pinus halepensis

Aleppo pine is a spreading evergreen tree up to 20m tall with silvery grey bark. The relatively short trunk forms many branches. Abundant woody cones release large numbers of windblown seeds which may spread long distances.

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Algaroba - Prosopis pallida

Widespread across northern inland Australia. Forms dense thorny thickets and displaces other plants. Stout thorns injure animals while thickets restrict access to water and hinder mustering. Deep rooted and survives long periods of drought.... more

Alisma - Alisma lanceolatum

Thrives in shallow, slow-moving or stationary, nutrient rich water. A serious weed of rice in New South Wales.... more