Birdeye Pearlwort is a perennial mat-forming plant with narrow leaves and tiny white flowers. It can become a troublesome weed when allowed to spread and establish in turf. This weed can populate most soil conditions very quickly by seed. Pearlwort is a good indicator of moist/wet conditions and is often mistaken for moss in lawns. Swards that are maintained at low mowing heights below 6mm (golf and bowling greens) are susceptible to invasion from this weed.
Cane cactus is a branched shrub with small scarlet flowers, green pad-like stem covered with white spines. It has green-yellow fruits containing many seeds covered with a hard coat.It is a potential wwed of grasslands, shrublands and open woodlands, particularly insemi-arid regions.
Cathedral bells is a garden escape that is naturalised in tropical, sub-tropical and warmer temperate regions. It is a weed of gardens, parks, roadsides, railways lines, waste areas, coastal environs, creek-banks, open woodlands, forests and forest margins. Usually grow up to 60-120 cm tall.Its relatively broad leaves have scalloped margins and are oppositely arranged. These leaves may be simple or compound, with three or five leaflets. Its drooping bell-shaped flowers are greenish-yellow to pinkish-red in colour (up to 7 cm long).these flowers are borne in branched clusters at the top of its stems.
Crimson cestrum invades disturbed rainforest margins, moist and wet sclerophyll forests, urban bush land and creek banks. In these situations in takes over and displacesindigenous shrubs and smalltreesand restricts thehabitatof native wildlife.
Annual herb growing up to 1,5m high with an erect, longitudinally grooved, hairy stem and deep tap root. It has pale green, hairy leaves and small white flowers in compact heads, appearing from September to May. The whole plant is a skin and respiratory irritant. It invades roadsides, rail sides, water courses, cultivated fields and overgrazed land.
To view famine weed map of the world click the following link: http://www.invasives.org.za/resources/downloadable-resources/finish/70-famine-weed-parthenium-hysterophorus/974-famine-weed-map-of-the-world.html