capitulum

nouns

a dense cluster of flowers or foliage
"a head of cauliflower"; "a head of lettuce"
capitulum, head
fruiting spike of a cereal plant especially corn
capitulum, ear, spike
an arrangement of leafy branches forming the top or head of a tree
capitulum
is a type of (narrower)
the upper branches and leaves of a tree or other plant
crown, treetop