I'm not familiar with that plant, but it seems it could be spelled two different ways. These first pics are with your spelling and the second is the other spelling.

Omolanthus populifolius
http://images.google.com/images?hl=e...-8&sa=N&tab=wi

Omalanthus populifolius
http://images.google.com/images?hl=e...-8&sa=N&tab=wi

What do you think?
Newt