Discovery of a New Plant Species in Big Bend National Park

In March 2024, park staff at Big Bend National Park in southwest Texas made a significant botanical discovery: a previously unidentified plant species. During a routine exploration, a volunteer from the park’s botany program and a supervisory interpretive park ranger encountered tiny, fuzzy plants among desert rocks in a remote area. Recognizing the uniqueness of the specimens, they documented their findings and sought assistance from species databases, herbarium records, and plant taxonomy experts. Their efforts included posting images on iNaturalist to solicit identification help from the public.

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The investigation led to the conclusion that these plants represented not just a new species but an entirely new genus within the Asteraceae family, commonly known as the daisy family. Researchers from the California Academy of Sciences, Sul Ross University, and Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional collaborated to publish their findings in the peer-reviewed journal PhytoKeys. The new plant was named Ovicula biradiata, with "Ovicula" meaning "tiny sheep" in reference to its wooly leaves, and "biradiata" highlighting the two prominent ray petals in each flower. The common name suggested for the plant is the "wooly devil," inspired by its fuzzy appearance and the nearby locality known as "Devil’s Den."

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Following the identification of Ovicula biradiata, Big Bend National Park Superintendent Anjna O’Connor expressed enthusiasm about further research opportunities. She stated, “I’m excited to discover whether there are other populations in the park, details of its life cycle, what are the pollinators, and due to the current drought, if it will be observed at all this spring.” The plant has only been found in a specific area of the Chihuahuan Desert, which is the largest warm desert in North America and a microhabitat within the park's expansive 800,000 acres.

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Researchers have preliminarily classified the wooly devil as a vulnerable species, facing a high threat of extinction due to severe drought conditions exacerbated by climate change. The plant's limited distribution suggests it is sensitive to environmental changes, raising concerns about its long-term survival.

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The discovery of Ovicula biradiata highlights the ongoing need for biodiversity documentation in the Chihuahuan Desert. The researchers emphasized that even well-explored areas, such as national parks, can still yield new species. They noted, “The discovery of Ovicula biradiata underscores that the task of documenting and describing plant diversity is far from finished in the Chihuahuan Desert.” This finding serves as a reminder of the ecological richness that remains to be uncovered in familiar landscapes.

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• “I’m excited to discover whether there are other populations in the park, details of its life cycle, what are the pollinators, and due to the current drought, if it will be observed at all this spring.” — Anjna O’Connor, Superintendent, Big Bend National Park

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• “The discovery of Ovicula biradiata underscores that the task of documenting and describing plant diversity is far from finished in the Chihuahuan Desert,” — Researchers from the California Academy of Sciences et al.

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