clypeole
noun
clyp·e·ole
-ˌōl
variants or less commonly clypeola
klə̇ˈpēələ
plural clypeoles
-lz
or clypeolae -əˌlē
: one of the shield-shaped sporophylls composing the fertile spike in members of the genus Equisetum
Word History
Etymology
New Latin clypeola, from Latin clypeus round shield + -ola -ole