Stachytarpheta mutabilis, Fam. Verbenaceae
Clumping perennial woody-based herb or sub-shrub to about 2m tall. Stems 4-angled and generally purplish.
Other invasive plants
Invasive plants that are not prohibited or restricted invasive plants, but are known to spread readily and cause negative impacts, within the region.
|Form or habit:||Herb, Shrub|
Simple, opposite or sometimes alternate, oval or lance-shaped, with a hairy under surface
|Flower description:||Pink to magenta flowers borne in groups along stout snake-like terminal spikes|
Black, Brown, Purple
|Fruit description:||Dry, purple, brown or black, enclosed in floral remnants, 3-7 x 2mm, splitting into two, 1 seeded segments, at maturity|
|Food source for:|
|Toxicity:||No toxicity known|
|Origin:||Tropical and subtropical America|
|Notes:||Spread by: seeds; contaminated soil and in contaminated pasture seed or fodder. Invades/threats: degraded pastures, cropland and disturbed or abandoned areas, woodland on any soil type. Notes: naturalised populations of this garden escapee have recently been recorded from several locations north of Mackay. Its presence usually indicates past disturbance; it spreads rapidly by seeds and is favoured by overgrazing, either by native or introduced animals. Not declared in Queensland although it is highly recommended that this weed be controlled to minimise agricultural and environmental damage. Environmental weed.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|