*Coronopus didymus

Family: Brassicaceae

Lesser Swinecress, Bittercress

Annual or short lived perennial herb to 30 cm high. Longevity 1 – 2 years.

Flowers: White, less than 2 mm long, September.

Fruit: Capsule (silicula) 1.5 mm long, separating at maturity into 2 one-seeded nutlets, mature at any time of the year.

Seed: 1.2 mm diameter. Dispersed locally.

Gallery images: seed, seedling, rootstock, resprout


  • Native of South America and Europe.
  • Weed of lawns, gardens, roadsides and wastelands
  • Uncommon and minor weed at the Australian Botanic Garden.
  • Probably killed by fire.

Asterisk * indicates exotic species naturalised at the Australian Botanic Garden.

Ecology of Cumberland Plain Woodland

Coronopus didymus plant

Coronopus didymus flower