New species photographed

A plant can be “new to science” even if it has been growing in the same desert for years, because nobody has formally compared it, named it, and placed it on the tree of life yet. That is what happened in Big Bend National Park, where staff spotted a tiny flower that turned out to be something botany had never cataloged. (nps.gov) The first clue was not a lab result but a walk through rocks in March 2024. A volunteer in Big Bend’s botany program and a supervisory interpretive park ranger noticed very small fuzzy plants in a remote northern part of the park and realized they did not match anything they knew. (nps.gov) From there, the work looked less like a dramatic expedition and more like careful detective work. The team checked species databases, herbarium records, plant taxonomy papers, area experts, and even posted photos online to see whether anyone could identify the plant. (nps.gov) The answer was bigger than “a new flower.” Researchers found the plant was distinctive enough to count not just as a new species, but as a new genus, which is a higher grouping scientists use for closely related species, like discovering not just a new last name in a family tree but a whole new branch. (calacademy.org) Its formal name is Ovicula biradiata. The National Park Service says Ovicula means “tiny sheep,” a nod to the thick white wool on the leaves, and biradiata refers to the plant’s two ray petals; researchers also gave it the nickname “wooly devil.” (nps.gov) Scientists placed it in the sunflower family, which is also called the daisy family, after genetic analysis and comparisons with other specimens. The study describing it was published in the peer-reviewed journal PhytoKeys with researchers from Big Bend, the California Academy of Sciences, Sul Ross State University, and a research center in Durango, Mexico. (nps.gov) (calacademy.org) One reason this surprised botanists is that Big Bend is not some blank spot on a map. The park has more than 1,200 plant species on record, and the California Academy of Sciences described the Chihuahuan Desert around it as one of North America’s most biologically diverse warm deserts. (nps.gov) (calacademy.org) The plant also seems built for a narrow window of desert life. The California Academy said it grows in harsh rocky soil and appears after rainfall, which helps explain how something so small could stay overlooked in a huge park with elevations ranging from under 1,800 feet near the Rio Grande to nearly 8,000 feet in the Chisos Mountains. (calacademy.org) This was rare enough that the California Academy called it the first new plant genus and species discovered in a United States national park in nearly 50 years. The last such genus they cited was July gold, found in Death Valley National Park in 1976. (calacademy.org) Big Bend staff still do not know how many populations of Ovicula biradiata exist, what pollinates it, or whether drought will keep it from showing up in some seasons. The park is now treating a ranger’s photograph and a volunteer’s field note as the start of a longer science story, not the end of one. (nps.gov)