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Hibiscus is originated from American continent.
For ornamental garden plants many commercial cultivars are developed.
This is one of them.
Hibiscus Andersonii
Many websites wrongly called many commercial cultivars as Hibiscus rosa sinensis
This is not China Rosa sinensis...
Its exotic American plant Red Hibiscus. Check stigma is not strait.
As an ID China rose is correct...
http://en.wikipedia.org/wiki/Hibiscus_ro...
Here is a proof -http://www.google.co.in/search?q=china+rose&hl=en&safe=off&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=davGTteLLcLWrQfl9oy7Dg&ved=0CCMQsAQ&biw=1280&bih=656