Those rows of wiggly lines are microscopic ridges on the surface of a flower petal. Plant experts have known about them for at least 75 years, but their exact function still remains a mystery.

With petals, the arrows appear more fanned out, which explains how flower petals tend to have more rounded ends than leaves, the researchers said. Sign up for the Live Science daily newsletter now.

Scientists recently discovered a solitary bee that cuts flower petals and forms them into tiny cocoons like papier-mache. These productive little artists make a nest less than an inch long for ...

Resin, a hardening compound, can be used to preserve flower petals and create artful objects like trinket dishes, coasters, and more. You'll need liquid resin, as well as its (usually included) ...

How flower petals get their shape. The elegant Nerium oleander, the blossoms of which are crimson, magenta or creamy white, is one of the most toxic plants in the world.

Scientists also reconstructed what they believe that first flower looked like: Somewhat similar to a water lily, with circles of broad petals around a center of protruding pollen spikes.