Ruellia, Mexican petunia
Ruellia simplex, Fam. Acanthaceae
An erect or ascending herb growing to about 1m tall. Stems take root where they touch the ground. Previously Ruellia tweediana, Ruellia malacosperma.
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|
Opposite, simple, linear to linear-ovate,100-300 x 10mm or less, dull dark green.
|Flower description:||Violet to purple, trumpet-shaped, 25-40mm long, with five spreading petals; borne in axillary clusters.|
|Fruit description:||Elongated capsules, to 25mm, maturing from green to light brown, containing about 20 brown flattened seeds, 2mm wide that are explosively expelled at maturity.|
|Food source for:|
|Toxicity:||No toxicity known|
|Notes:||Spread by: garden waste; seed and plant fragments spread by water. Invades/threats: Creek lines including flood reach, and environmentally sensitive areas where it actively displaces native species and vegetation communities. Notes: garden escapee that spreads aggressively. Large infestations known in Myrtle, Bakers and Reliance Creeks. Able to grow in shade and thrive in damp conditions; produces copious quantities of seed which create a large seed bank in the soil making it difficult to control once established in creek lines or rainforest areas. Environmental weed.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|