Hibiscus tiliaceus is a very useful plant in that it will grow when most others will not e.g. in coastal, saline, sandy locations - hence its common name of Beach Hibiscus.
It has heart shaped, shiny, dark green leaves with whitish undersides that are around 12cms across while the bark is pale, creamy/grey.
The attractive, solitary yellow flowers with a dark bronze centre are funnel shaped and pendulous with prominent fused stamen which is common amongst most Hibiscus. They start as a clear yellow turning to orange and red before dropping off - generally flowers don't last much more than 24 hours.
This is not a frost hardy Hibiscus and although happy in coastal settings, it does not like lots of cold winds.
They make excellent shade and screen trees.