inkberry vs red-ink plant

inkberry

noun
  • Ilex verticillata, American winterberry 

  • Scaevola plumieri, a fan flower 

  • Any plant of the genus Phytolacca, especially Phytolacca americana, the pokeweed. 

  • Ilex glabra (winterberry, gallberry) 

red-ink plant

How often have the words inkberry and red-ink plant occurred in a corpus of books? (source: Google Ngram Viewer )