Venice Mallow (Hibiscus trionum) (IMAGE) University of Cambridge Caption Venice Mallow, also called Flower-of-an-hour, (Hibiscus trionum) was selected by Edwige Moyroud as a new model plant for studying petal pattern development. Native to Australia, H. trionum also now occurs in gardens and has become naturalised in some parts of the world. Credit Lucie Riglet and Edwige Moyroud Usage Restrictions Please only republish the image in relation to this research paper and include an image credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.