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How to Manage PestsIdentification: Weed Photo Gallery
Southern brassbuttonsScientific name: Cotula australis (Sunflower Family: Asteraceae)Click on image to enlarge 
Southern brassbuttons, native to Australia, is a low-growing annual broadleaf with branching stems. It has aromatic leaves and buttonlike flower heads and is sometimes confused with lawn burweed. In California it is found in the North, Central, and South Coast to an elevation of about 800 feet (250 m). Southern brassbuttons grows on agricultural land and other disturbed areas, especially in coastal areas. HabitatTurf, landscaped areas, gardens, yards, orchards, vineyards, annual crops, and disturbed, unmanaged places. SeedlingCotyledons (seed leaves) are long, narrow, and fleshy. The first true leaves are divided into three narrow lobes. Mature plantFinely dissected leaves are sparsely covered with short hairs and are arranged alternate to one another along the stem on short stalks. Although confused with southern brassbuttons, lawn burweed leaves are shorter, usually palm shaped, and often have dark to purple stem spots and the flowers are green FlowerFlowers bloom from January through May. They are small, pale yellow to white, and cluster into heads atop long stalks. They do not have prominent petals. Leaves of the flowering heads have brown tips. FruitThere are two fruit types. One is egg-shaped, broadly winged and stalked. The other is barely winged and virtually stalkless. Both types consist of one flat seed and have glandlike hairs on both sides. ReproductionSouthern brassbuttons reproduce by seed. Related species/Similar looking plants
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