noun
capitulum; head (inflorescence)
Botanical term for a dense cluster of sessile flowers, typical of the Asteraceae family (e.g., daisies, sunflowers).
タンポポの頭状花序は、多数の小花からなる。
The dandelion's capitulum consists of many small florets.
キク科の植物は
Plants of the Asteraceae family often have a capitulum.