Fallopia japonica typical to see much smaller plants in places where they sprout through cracks in the pavement or are repeatedly cut down. The leaves are broad oval with a truncated base, long and broad, with an entire margin. The flowers are small, cream or white, produced in erect racemes long in late summer and early autumn. Closely related species include giant knotweed ("Fallopia sachalinensis", syn. "Polygonum sachalinense") and Russian vine ("Fallopia baldschuanica", "Polygonum baldschuanicum"). Other English names for Japanese knotweed include fleeceflower, Himalayan fleece vine, monkeyweed, monkey fungus, Hancock's curse, elephant ears, pea shooters, donkey rhubarb (although it is not a
Invasive species of Australian origin coastal wattles, introduced to help bind drifting sand dunes. They remain serious pests, but some controls have been introduced. In the case of "Acacia saligna", the introduction of acacia seed weevils ("Melanterius" species) has achieved complete control. A lesser degree of control has been achieved for "Acacia cyclops" by the introduction of a gall rust fungus ("Uromycladium" species). Invasive species of Australian origin There are a number of Australian species that have become invasive when introduced into outside Australia or outside Oceania. The Australian magpie was introduced into New Zealand and are considered to be a pest because of attacks