Macroptilium atropurpureum, Fam. Fabaceae
A slender twining or prostrate perennial vine with rough hairy stems to several metres; sometimes rooting from prostrate stems and often covering large areas.
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:||Vine (Climbing, Twining or groundcover)|
Compound, alternate pinnate with 3 leaflets, terminal leaflet ovate, 20-85 x 18-50mm, lateral leaflets similar in size but usually with 1-2 lobes on lower margin, apex pointed, base rounded to heart-shaped, dark green sparsely hairy above, dense silky white hairs below. Stipules triangular, 2-5mm long.
|Flower description:||Showy, dark purple to almost black pea-flowers, 6-12 crowded toward the tip of long axillary racemes.|
|Fruit description:||Straight narrow minutely hairy pods, 50-100 x 3–5mm, dark brown when mature contain about 12-15 seeds. Seeds plump more-or-less kidney shaped, brown flecked with black, 3-4 x 2-3mm.|
|Food source for:|
|Toxicity:||No toxicity known|
|Notes:||Spread by: vegetatively; seeds dispersed by water and in contaminated soil. Invades/threats: cropland; creek banks and woodland where it smothers young trees. Notes: siratro, a bred cultivar, was released as a pasture legume in the 1960’s and is now widely naturalised. Environmental weed.|
|Information sources:||Mackay Regional Pest Management Group (2018) Weeds of the Mackay Whitsunday Region Second Edition.|