Plants of South Eastern New South Wales
Stellaria media
Common chickweed, Chickweed
Caryophyllaceae
Grassy areas, gardens, disturbed sites, roadsides, shaded crevices in rocks, and disturbed damp sites. Widespread.
Introduced annual or biennial herb to 0.6 m tall or prostrate, mostly hairless. Stems with a line of hairs between the nodes. Leaves opposite each other, 0.5-4 cm long, 2-15 mm wide, margins sometimes hairy, bases sometimes cordate, tips pointed, often wavy. Flowers with 5 deeply cleft white petals or 0 petals, and 5 sepals. Sepals 4-7 mm long, petals 3-4 mm long. Flowers single or in leafy clusters. Flowers Winter to Summer.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Stellaria~media (accessed 18 January, 2021)
This identification key and fact sheets are available as a free mobile application: