Cyananthus hookeri vanished from India’s botanical record in 1867. This September, on a wind-scoured Himalayan slope, it reappeared.
Scientists have confirmed the first Indian sighting of the tiny purple-blue flower in 158 years, in Arunachal Pradesh’s Tawang district. Fewer than 50 mature plants are thought to survive in the country.
The find
A Botanical Survey of India team spotted the plant on September 20, 2025, near Chuna Valley, a kilometer from Mago village, at 3,600 metres. Researchers Subhajit Lahiri and Monalisa Das made the find under the supervision of Sudhansu Sekhar Dash. They published their results June 30 in Oryx, a Cambridge University Press conservation journal.
British botanist Joseph Dalton Hooker collected the species once before, in Sikkim in 1867. No one recorded it in India again until last year.
Cyananthus hookeri is small and short-lived, built for brutal alpine conditions. It belongs to the bellflower family and flowers only in late summer. Outside India, it survives in scattered pockets across Bhutan, China, Nepal, and Tibet.
A population on the edge
Researchers found clusters of just three to seven mature plants at the site. Across India, they estimate, fewer than 50 mature individuals exist — a number that matters because the IUCN Red List’s own criteria flag any species with a national population under 50 mature individuals as qualifying for Endangered status on population size alone. That scarcity is why the team has recommended the species be listed as Endangered in India.
Small, isolated populations like this one carry real risk. A single landslide, an unusually dry season, or one bad wildfire could wipe out a meaningful share of India’s entire population of the species.
Arunachal Pradesh Deputy Chief Minister Chowna Mein called the find a sign of the region’s biodiversity, saying it “highlights Arunachal Pradesh’s rich biodiversity” and pointing to the need to protect its Himalayan ecosystems.
Why one flower matters
The discovery lands inside the Eastern Himalaya biodiversity hotspot, one of just 36 regions worldwide recognized for both exceptional plant diversity and severe habitat loss. Arunachal Pradesh alone is thought to hold thousands of plant species, a large share of them found nowhere else on the planet, and much of its high-altitude terrain has never been formally surveyed.
That gap is the real story here. Cyananthus hookeri went unrecorded for 158 years not because it vanished, but because almost no one looked for it in terrain this remote. Botanists say India’s northeastern border regions likely hold other species still waiting to be found, or refound, the same way.
Does one flower “signify something”? On its own, no. A single alpine herb rediscovered on one mountainside will not shift how India manages its forests. But it does something more specific: it exposes how thin the country’s picture of its own high-altitude biodiversity still is, in a region where climate change, landslides, and infrastructure projects are all accelerating.
Conservationists are now expected to push for habitat protection around the site, repeat population surveys in coming flowering seasons, and possibly seed banking to guard against the population’s collapse.
For now, Cyananthus hookeri survives in exactly one place scientists know of: a rocky slope in Tawang, three to seven plants at a time.
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