Three years ago, Carlos Magdalena — one of the world's foremost waterlily specialists at Kew Gardens — was scrolling Instagram when he spotted a photo of someone swimming among giant waterlilies in Colombia's Inírida River. The photographer, American carnivorous plant nursery owner Jeremiah Harris, had tagged the plants as the common Victoria amazonica. Magdalena knew that species doesn't grow in the Inírida basin. That mismatch launched everything that followed. What ensued was not a quick field trip. Magdalena spent years analysing satellite imagery, securing permits, and assembling funding before he could get boots in the flooded jungle. The expedition itself — a five-day push with botanists from Bogotá's Jardín Botánico and members of local indigenous reserves — nearly came up empty. They found the waterlilies only because their driver pointed them to a small lake deep in the flooded rainforest, with just ten hours left before their return flight. The paper published Friday in Phytotaxa confirms the plant as Victoria colombiana, the fourth known species of giant waterlily on Earth. Giant waterlilies predate the breakup of the continents. They can span three metres and support the weight of a small child. The fact that a species this large — visible from space, as taxonomist Maarten Christenhusz notes — remained unknown to science until 2025 is the kind of detail that recalibrates your sense of how much inventory work remains on this planet. The conservation picture is immediately dire. The team estimates 30 to 50 individual plants exist in the wild. That population size, in a single river system in a region under deforestation and climate pressure, places Victoria colombiana at critical risk before it even has a formal IUCN Red List designation. The researchers are working toward that listing now. The discovery story has a structure worth noting: indigenous knowledge of the landscape, a social media accident, institutional botanical expertise at Kew and Bogotá, and satellite technology all converged on the same problem. None of those elements alone would have produced the result. Harris's friends teased him for taking plant selfies. One of those selfies turned into a species description. Conservation efforts are already in motion. The team is exploring whether a naturalised population could be established in a more accessible lake within indigenous territory, and they hope to collect seed for cultivation in Bogotá and eventually at Kew. Whether those efforts outrun the threats to the Inírida basin is the open question that will determine whether this discovery story has a second chapter or an epitaph.
