Sida hackettiana, Fam. Malvaceae
Perennial sub-shrub, variously hairy including star-shaped hairs, stems usually woody-based and strongly fibrous above. Spreading, densely hairy to 1.5m but usually shorter. Previously Sida subspicata.
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:||Shrub|
Alternate simple, margins serrately toothed. Stipules present. Ovate to oblong, 20-100 x 5-40mm, grey-green, densely covered with fine matted star hairs on both surfaces, denser and paler on the underside; stipules linear.
|Flower description:||Tiny, yellow to orange, in clusters of 2-3, borne along irregular terminal spikes.|
|Fruit description:||Dry round brownish and radially separating into 1-seeded, wedge-shaped segments, with or without 2 fine bristles or points depending on species. Around 4-6mm diameter, separating into 4-5 segments with rounded apex, initially finely hairy, becoming glabrous with age. Calyx 5-lobed, persistent, 2.5-4mm long, woolly hairy with sharp pointed lobes.|
|Food source for:|
|Toxicity:||No toxicity known|
|Notes:||Spread by: segments spread by water, farm machinery, stock and in contaminated feed or seed. Bristly segments also adhere to clothing and animals. Invades/threats: pastures, open forests and disturbed areas along roadsides, headlands and stock camps. Notes: local native that appears to be more common on off-shore islands and in drier areas. It prefers lighter soils. It may invade newly planted improved pastures but is rarely eaten by cattle. Environmental weed.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|