Non-indigenous synonyms

Of non-indigenous flora are the oak, poplar, bluegum, the Australian wattle, the vine, and almost every variety of fruit tree and European vegetables.

Of the total 200 species 150 (130 indigenous) are valuable for forage, 34 (20 indigenous) are classed economically as weeds, 10 are non-indigenous cereals and 6 are ornamental.

Weeds are very numerous (about 125); and some, notably the sand-bur (Solanum rostratum) cockle-bur, and tumble-weeds among indigenous, and the Russian thistle (Salsola tragus) and purslane among non-indigenous species, are agricultural pests.

Non-indigenous flatworms prey on the native earthworm, threatening earthworm populations.