| Taxon | Cotula australis |
| group | Eudicots |
| Family | Asteraceae |
| Family common name(s) | composite; composita; comp; aster; asterwort; asterworts; sunflower; daisy; dandelion |
| Genus common name(s) | cotula; brassbuttons; brass-buttons; brass buttons; waterbuttons; water-buttons; water buttons |
| Species common name(s) | Australian cotula; Australia brass-buttons; Australia brass buttons; Australian brass-buttons; Australian brass buttons; Australian brassbuttons; Australian brass button; Australian waterbuttons; Australian water-buttons; Australian water buttons; small brass buttons; southern brassbuttons; southern brass-buttons; southern brass-buttons; southern soldier's button; green buttons; common cotula |
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| Common name(s) generally applied to other taxa or multiple taxa | carrot weed, carrot-weed, carrotweed are applied to taxa in multiple families; common sandaster, common sand-aster, common sand aster are more commonly applied to Corethrogyne filaginifolia |
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