This project is supported by The Central Qld Coast Landcare Network through funding from the Australian Government's Caring for our Country

Caring for our Country
 
< Back to search results

STAR BURR

(Acanthospermum hispidum, fam. Asteraceae )

Acanthospermum hispidum Acanthospermum hispidum Acanthospermum hispidum Acanthospermum hispidum Acanthospermum hispidum
Upright annual herb 45-90cm, covered with coarse hairs, stems repeatedly forked.
Form or habit: Herb
Latex:Absent
Leaf:Simple Unknown

Opposite, yellowish-green, 25-50mm long, elliptic or ovate, hairy on both surfaces, either stalkless or with a winged stalk-like base up to 10mm long, toothed margins.

Flower conspicuous: Inconspicuous
Flower colour: Greenish
Flower description:Solitary greenish heads, 4-5mm wide, borne in leaf axils and forks of stem.
Fruit conspicuous: Conspicuous
Fruit colour: Green turning brown on maturity
Fruit: Dry
Fruit description: Heads of 5-10 wedge-shaped ‘seeds’ radiating from centre forming a star-like burr. Mature ‘seeds’ 6mm long, covered with short, hooked spines and with two stouter divergent spines, 3-4mm long, at the tip.
Habitat:
Distribution:
Food source for:
Toxicity:Toxic or irritant to domestic pets
Origin:America
Weed:Yes
Weed status:Environmental/garden escapee
Notes:Prickly ‘seeds’ adhere to ‘everything’, probably also water borne. Invades disturbed land and alluvial flats; will out-grow young cane. Occasionally seen on coastal dunes in this district.


Information sources:

All photos are under copyright. CQC Landcare Network has permission to use all photos on this website. If you wish to use them, please contact the photographer directly or your local group (WCL PCL SLCMA).

 
background