Capitulum

n.	1.	A thick head of flowers on a very short axis, as a clover top, or a dandelion; a composite flower. A capitulum may be either globular or flat.
	2.	(Anat.) A knoblike protuberance of any part, esp. at the end of a bone or cartilage. [See Illust. of Artiodactyla.]

Noun	1.	capitulum - a dense clusters of flowers or foliage; "a head of cauliflower"; "a head of lettuce" Synonyms: head
	2.	capitulum - fruiting spike of a cereal plant especially corn Synonyms: spike, ear
	3.	capitulum - the upper branches and leaves of a tree Synonyms: treetop, crown

head, plant organ