The three leaf-like human stands for the three parties,namely in alphabetical order,DAP,PAS and PKR.
While the petals of hibiscus represent the five main ethnics in Malaysia.
Make sense ,but...I can smell the odour of racial-based politics ....why can the petals symbolise other things ,like democracy, justice , freedom of speech ,equality and unity instead?
Here is the Facebook page of PR :http://www.facebook.com/pages/PAKATAN-RAKYAT/216718799154