humble plant vs touch-me-not

humble plant

noun

  • sensitive plant (Mimosa pudica). 

touch-me-not

noun

  • The sensitive plant (Mimosa pudica). 

  • The squirting cucumber (Ecballium elaterium). 

  • The jewelweed, Impatiens noli-tangere, Impatiens capensis, Impatiens parviflora. 

How often have the words humble plant and touch-me-not occurred in a corpus of books? (source: Google Ngram Viewer )