caudex vs seta

caudex

noun
  • An enlargement of the stem, branch or root of a woody plant, usually serving to store water. 

seta

noun
  • The stalk of a moss sporangium, or occasionally in a liverwort. 

  • A bristle or hair 

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