red nightshade vs striped alder

red nightshade

noun

  • Phytolacca americana syn. Phytolacca decandra 

  • Solanum villosum 

striped alder

noun

  • American winterberry, Ilex verticillata. 

How often have the words red nightshade and striped alder occurred in a corpus of books? (source: Google Ngram Viewer )