Meet the ‘wooly devil,’ a new plant species discovered in Big Bend National Park

The plant, formally known as Ovicula biradiata, is especially notable for being the simultaneous discovery of a new species and genus. It was found with help from the community science app iNaturalist.

By James Doubek, NPRMarch 7, 2025 11:00 amEnergy & Environment

D. Manley / National Park Service

A close-up view of the wooly devil, a new species and genus identified in Big Bend National Park in Texas.

From NPR:

Say hello to the wooly devil. The type of sunflower is a new plant species, identified in Big Bend National Park in Texas.

Ovicula biradiata, as it is formally known, is especially notable for being the simultaneous discovery of a new species and genus.

The findings were published last month in the peer-reviewed journal PhytoKeys.

The plant was found on a hike in the park’s backcountry in March 2024 by park volunteer Deb Manley and Cathy Hoyt, a park interpretive operations supervisor.

When Manley uploaded photos to the community science app iNaturalist, botanists got excited.

“That kind of caused an uproar — it caused an email chain of different botanists emailing each other,” says Isaac Lichter Marck, a post-doctoral research fellow at the California Academy of Sciences who was part of the research.

A whole team assembled to study samples of these plants.

“It was very clear at first that it was a member of the sunflower family, because all members of the sunflower family have flowers that are made up of a bunch of flowers put together,” Lichter Marck says. The “goal was to solve the mystery of what its closest relatives were. And based on that, how it should be classified.”

The team compared it to similar plants by sequencing its DNA and using a scanning electron microscope.

They found a group where the mystery plant fit in among its close relatives. But “this new plant didn’t fit cleanly within any recognized genus, which is the rank of classification above the species, which meant that it wasn’t only a new species to science, but a completely new genus,” Lichter Marck says. It’s not uncommon for new species and new genera to be named, he says, but for it to be discovered simultaneously is “very rare.”

The wooly devil

The wooly devil is small, only reaching a few inches across at most.
C. Hoyt / National Park Service

Deb Manley picked the name based on the plant’s wooly hairs and its tendency to have two ray florets that “sort of look like devil horns,” according to Lichter Mark.

The wooly devil is small — it can be less than half an inch to about 3 inches across, researchers say.

They still have a lot to learn about the plant. So far it’s only been identified in three small sections in one area of the Chihuahuan Desert in the national park.

They know it’s an annual plant that blooms after desert rains. And rain has been lacking; the area has suffered drought in recent years.

People might think of desert plants as being accustomed to drought and aridity, conditions that are predicted to become more common because of climate change.

But “the truth is that desert plants in many cases are very sensitive,” Lichter Marck says. Plants like the wooly devil depend on “good rain years,” which are expected to become more rare.

Lichter Marck says because the plant is so “restricted geographically,” it may have already passed its peak.

There are two sides to the discovery. “It’s a great thing that we’re able to document one of our coinhabitants on Earth,” he says.

But then there’s the stark reality of climate change. “We probably are documenting a species that’s on its way out,” he adds. “There are countless other species that are probably not going to be recognized before they go extinct.”

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Meet the ‘wooly devil,’ a new plant species discovered in Big Bend National Park

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