noun
tubular flower; disk floret
Botanical term for the small, tube-shaped individual flowers that make up the central disk of composite flower heads (Asteraceae), such as sunflowers and daisies.
ヒマワリの中心部は管状花で構成されている。
The center of a sunflower is composed of tubular flowers.
キク科の植物では、管状花と舌状
In plants of the Asteraceae family, both tubular flowers and ray florets can be seen.
Compound of 管状 (tubular) + 花 (flower), directly describing the shape of the florets.