Anigozanthus manglesii vs kangaroo paw

Anigozanthus manglesii

kangaroo paw

noun
  • Any of various perennial flowering plants of the family Haemodoraceae, endemic to the south-west of Western Australia. 

How often have the words Anigozanthus manglesii and kangaroo paw occurred in a corpus of books? (source: Google Ngram Viewer )