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ASTHMA PLANT

(Chamaesyce hirta prev. Euphorbia hirta, fam. Euphorbiaceae)

Chamaesyce hirta prev. Euphorbia hirta Chamaesyce hirta prev. Euphorbia hirta Chamaesyce hirta prev. Euphorbia hirta Chamaesyce hirta prev. Euphorbia hirta Chamaesyce hirta prev. Euphorbia hirta
Annual sprawling to more-or-less erect, branching herb, stems 2-40cm with milky sap, closely pressed short curled hairs and long spreading yellowish hairs.
Form or habit: Herb
Latex:Present
Leaf:Simple Opposite

Opposite simple ovate, 49 x 24mm, hairy, often brownish-green, margins serrated.

Flower conspicuous: Inconspicuous
Flower colour: Green
Flower description:Tiny greenish, borne in tight clusters between the upper pairs of leaves.
Fruit conspicuous: Inconspicuous
Fruit colour:
Fruit: Dry
Fruit description: Hairy capsules, 1.5 x 1.5mm, separating into three 2-valved segments. Seeds oval with square base 0.8mm long, with or without regular crosswise wrinkles.
Habitat:
Distribution:
Food source for:
Toxicity:No toxicity known
Origin:Central America
Weed:Yes
Weed status:Environmental/garden escapee
Notes:Spread by: Seeds in contaminated soil, garden waste.
Invades: Colonises any bare areas in full sun - headlands, creek banks, roadsides and gardens.
Information sources: Mackay Regional Pest Management Group (2011) Weeds of the Mackay Whitsunday Region.

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