Splendid hibiscus 
Spotted Rock-Rose 
Spotted-stalked Tree-Mallow 
Sprawling needle sunrose 
Spreading Fanpetals 
Sterculia guttata 
Streambank wild hollyhock 
Sturts Desert Rose 
Syrian Rock-Rose 
Tamarilla del Mar Menor 
Texas Indian mallow 
Thomasia petalocalyx 
Thymelaea passerina 
Tree Mallow 
Turk's Cap 
Upland cotton 
Wercklea ferox 
White Rock-Rose 
Woolly Rice-Flower 
Yellow Hibiscus 
Yellow Rice-Flower