 
    
    
     
    
    Caption: Petrophile merrallii . A , flowering and fruiting branchlet; B , leaf; C , flower; D , nut showing adaxial surface; E , nut showing abaxial surface (A-E , R.Chinnock 3280, AD).Illustrators: A.Barley.
Flora of Australia  Volume 16 (1995) figure 86.