mountain spinach vs saltbush

mountain spinach

noun
  • A plant in the amaranth family used as a leaf vegetable, Atriplex hortensis. 

saltbush

noun
  • Any of the genus Atriplex of plants, especially Atriplex hortensis or Atriplex patula, found in dry habitats, that have edible leaves resembling spinach, including many desert and seashore plants and halophytes. 

  • Sarcobatus vermiculatus (black greasewood, greasewood, seepwood) 

  • Baccharis halimifolia 

How often have the words mountain spinach and saltbush occurred in a corpus of books? (source: Google Ngram Viewer )