In Australia, particularly around Melbourne, Pampas lily-of-the-valley (Salpichroa origanifolia) is also known as Lily of the Valley Vine. It's a fast-spreading, scrambling perennial that forms a dense groundcover and can be invasive.  

Common Names: 

• Lily of the Valley Vine

• Pampas Lily of the Valley: (its scientific name)
  
  

Characteristics:

• Perennial Herb/Vine: It has trailing, four-cornered stems and a robust root system. 

• Flowers: Small, white or cream, bell-shaped (urn-shaped) flowers. 

• Berries: It produces white to pale yellow, berry-like fruits. 

Why it's a Weed:

• Smothers Vegetation: It's a declared and environmental weed that can smother other plants, shrubs, and trees. 

• Difficult to Control: Its extensive root system and ability to spread via birds, animals, and dumped garden waste make it challenging to manage. 

• Wide Distribution: It is widely distributed and naturalized in urban areas and temperate regions of southern Australia, including Victoria and New South Wales.