*Hibiscus trionum

Family Malvaceae

Bladder Ketmia, Flower-of-an-hour

Short lived perennial herb with dissected leaves, longevity 1 – 2 years.

Flowers: Yellow, cream or white with dark purple basal spot, November – May.

Fruit: Capsule to 20 mm long, November – May.


Gallery images: seed, seedling, rootstock, resprout


  • Cosmopolitan species, origin unclear
  • Uncommon weed in grassland at the Australian Botanic Garden, (first noted January 2007).

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

Ecology of Cumberland Plain Woodland

Hibiscus trionum plant

Hibiscus trionum flower

Hibiscus trionum fruit