saw palmettos is saw palmetto's Plural Form

saw palmetto

US [sɔː pælˈmetəʊ]
UK 
  • n.【植】锯棕榈;锯齿美洲蒲葵
Plural Form:saw palmettos  
n.
1.
【植】锯棕榈;锯齿美洲蒲葵