Amaranthus spinosus, Fam. Amaranthaceae
Upright annual herb, 50-100cm, stiff red or green stems ribbed lengthwise with characteristic pairs of axillary spines, 5-12mm long, at base of leaf stalks.
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|
Alternate spearhead shaped on long slender stalks, dark green or occasionally red.
|Flower description:||Small papery, greenish-white, mixed with sharp bracts, borne in dense axillary clusters, often forming long tail-like terminal spikes.|
|Fruit description:||Small, dry, 1-seeded fruits, 1-2mm across, surrounded by pale papery leaf-like structures. Seeds erect, shiny black, about 1mm in diameter.|
|Food source for:|
|Notes:||Spread by: probably by seed in contaminated soil, animals and water. Invades/threats: stockyards, wasteland, roadsides, pastures. Seldom recorded in Mackay Whitsunday Region.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|