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Common Cotula

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Common Cotula photos
Scientific Name:Cotula australis

Status:
Native of Australia and New Zealand.
Common Cotula plants
Common Cotula plants
Photo: A J Brown

Other Common Names:

Australian Water Buttons, Southern Water Buttons, Bachelor's Buttons, Carrot Weed
Plant Description:Small prostrate to ascending annual plant, to 10 cm high and sometimes rooting at the nodes of its stems. Stems and leaves have scattered long hairs. Leaves are obovate (oval-shaped) to oblanceolate (backward pointing spear-shaped), 1 – 2 cm long, partly stem clasping, and divided into many linear and lobed segments.

The hemispherical flower-heads are pale-yellow to cream, 4-5 mm diameter, on slender stalks, which are longer than the leaves. Fruit (achenes) are 1-1.5 mm long and flattened; the outer with a grandular surface and narrow thickened wings, the inner smooth and wingless. Flowers winter to late spring.

Habitat:
Grows in moist, open grassy situations, roadsides, lawns, wall crevices and grassy forests.

RegionSalinity ClassWaterlogging Class
Mallee, Loddon Murray, Central and Northern, Wimmera, Western, Gippsland S0W1, W2

Comments:Common Cotula is similar to Water Buttons (Cotula coronopifolia) and Ferny Cotula (Cotula bipinnata) (see Key to Cotulas).

Common Cotula photos

Common Cotula flower-head
Common Cotula flower-head
Photo: A J Brown
Common Cotula leaf
Common Cotula leaf
Photo: A J Brown
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

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