Arisaema triphyllum vs Indian turnip

Arisaema triphyllum

Indian turnip

noun

  • Used other than figuratively or idiomatically: see Indian, turnip. (also meaning Brassica rapa cultivars in India) 

  • Arisaema triphyllum 

How often have the words Arisaema triphyllum and Indian turnip occurred in a corpus of books? (source: Google Ngram Viewer )