Weed Identification

Australia > > Singapore Daisy

Singapore Daisy

Sphagneticola trilobata

Alternative Name(s): Wedelia lobata.

Family: Asteraceae.

Form: Herb

Origin: Native from Mexico to Argentina.

Flowers/Seedhead: Flowers: Flowerheads solitary in leaf axils, on stalks 314 cm long. Flowerheads with 414 petal-like ray florets with strap-like part 615 mm long and with 5 small lobes at the apex; inner (disc) florets tubular. Flowers spring to autumn.

Description: Mat-forming perennial herb to 70 cm high, with stems to 2 m or more long. Leaves 311 cm long, 2.58 cm wide, dark green above, paler below, with simple white hairs, margins toothed.

Distinguishing features: Distinguished by spreading stems that root at nodes; presence of some leaves that are trilobed; flowers to 3.5 cm wide with yellow disc and ray florets; seeds 45 mm long, tuberculate and topped with short scales.

Dispersal: Spread by seed and locally by spreading stems.


Flowers & leaves with irregularly toothed margins

Notes: Introduced as an ornamental. Deliberately planted as a roadside and railway embankment stabiliser in Queensland. Heavily promoted by nurseries in the mid 1970s. Now common along the coast of Queensland, in tropical and sub-tropical areas and spreading in coastal areas of New South Wales and the Northern Territory. Singapore Daisy competes with native groundcover species. In north Queensland, it forms dense infestations along disturbed edges of rainforests. Also naturalised in Florida, Malaysia and on Pacific Islands.

References:

    Flora of the Venezuelan Guayana. P Berry et al., 1997, pages 360361.

Web References: Search Australian web sites for further information on this weed.


Young trilobed leaves

Forms dense stands, Maroochydore, Qld, Sept

This weed has been included in the WEEDeck field guide as card H55

More information about WEEDeck is available from Sainty & Associates Pty. Ltd.

 

Australia > > Singapore Daisy

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