On a windswept, precipitous cliff on Robinson Crusoe Island, Chile, the last known wild Dendroseris neriifolia stands alone—an emblem of botanical brinkmanship as conservationists scramble this summer to forestall its total extinction. With the island just beginning to see its seasonal influx of visitors, a team of biologists and climbers from the Chilean National Forestry Corporation (CONAF) and the Millennium Seed Bank Project scaled the rocky outcrop late last week, successfully collecting a limited cache of seeds under challenging conditions.

Dendroseris neriifolia, found nowhere else on earth, has become a focal point for SDG 15 (Life on Land) implementation in the Pacific. The species’ solitary status has raised alarms across Latin American conservation networks, particularly as robust in situ preservation appears increasingly unviable. According to CONAF’s field lead, Dr. Maria Alvarez, only 17 viable seeds were gathered from the tree on Thursday, with viability testing and germination trials already underway at the island’s small botanical facility.

Efforts to propagate Dendroseris neriifolia ex situ have so far brought mixed results, with the Millennium Seed Bank in the UK confirming the arrival of the new batch this weekend. Their target: cultivate at least ten robust seedlings for potential reintroduction by late 2026, contingent on successful acclimatization to local soil and climate conditions. The initiative is being closely monitored by the Global Partnership for Plant Conservation, which is pressuring for transparent progress metrics after a series of high-profile, but ultimately unsuccessful, species recovery campaigns elsewhere in the region.

As midday temperatures hovered above 30°C on Friday, conservationists emphasized the urgency of acting during this summer window, before coastal storms and tourist activity increase logistical risks. While officials celebrated the successful seed collection, they cautioned against premature optimism, citing the species’ complex reproductive biology and the precarious state of its natural habitat. For now, Dendroseris neriifolia remains the world’s loneliest tree—a stark reminder of the stakes facing island endemics in 2026.