Interestingly, its achenes — the tiny, sometimes yellowish or brownish specks — are considered the real fruits, which are rich in fibre. Each of these achene is a fruit, inside of which is a seed.

The flower heads are 1 to 2 inches across, composed of yellow petal-like ray flowers. Heads are solitary. Achenes are 1/8 inch long, five-to eight-ribbed, the apex ends in a slender beak two or four ...

Stamens numerous. Carpels 1 to many. Fruit usually an achene or follicle, rarely a berry or capsule. Contains about 50 genera and 1900 species. Plants usually woody and climbing; leaves opposite or ...