Giant pigweed, black pigweed
Trianthema portulacastrum, Fam. Aizoaceae
Prostrate, somewhat fleshy annual herb, trailing to 50cm long, sometimes forming a dense mat.
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|
Simple, opposite unequal in size, broadly elliptic to broadly obovate 5-50 x 5-45mm, margins entire, apex obtuse and may have notch, base rounded to wedge shaped. Leaf stalks 6-20mm long, with sheathing bases expanded into a shallow ‘cup’.
|Flower description:||Pink or white, small, 3-4mm long, solitary and more-or-less hidden in the sheathing leaf bases.|
|Fruit description:||Brown capsules, somewhat cone shaped and attached at pointed end, around 4mm long. Numerous black weakly ridged seeds, 1.5-2.0mm wide.|
|Food source for:|
|Toxicity:||Toxic if ingested, toxic or irritant to domestic pets, toxic to native animals|
|Origin:||Tropical Africa and Asia|
|Notes:||Spread by: water and contaminated soil. Invades/threats: wastelands, roadsides and cultivated crops particularly in drier areas. Notes: rarely recorded in this region. Reported to be poisonous. Environmental weed.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|