In a significant botanical discovery, a rare Himalayan alpine flower, Cyananthus hookeri, previously believed lost to India for 158 years, has been rediscovered thriving in the remote Chuna Valley of Arunachal Pradesh's Tawang district.
The delicate purple-blue blossom was last documented in India in 1867 by renowned British botanist Sir Joseph Dalton Hooker, after whom the species was named. Its reappearance marks a crucial moment in India's botanical history, confirming its presence in a region where it had never before been scientifically recorded.
Rediscovery by Botanical Survey of India
The landmark finding was made by a research team from the Botanical Survey of India (BSI), comprising Sudhansu Sekhar Dash, Subhajit Lahiri, and Monalisa Das. Their detailed observations and research have since been published in the international conservation journal, Oryx.
The elusive plant was located at an altitude of approximately 3,600 metres, a harsh alpine environment characterized by extreme conditions and short growing seasons. Despite extensive botanical explorations across the eastern Himalayas over the past century, Cyananthus hookeri had remained undetected in India since its original collection.
Precarious Existence and Endangered Status
While the rediscovery is cause for celebration, scientists warn that the flower's existence remains precarious. During their expedition, researchers counted fewer than 50 mature plants, all confined to a highly restricted alpine habitat. Such a tiny, isolated population renders the species exceptionally vulnerable.
Experts recommend that Cyananthus hookeri be classified as Endangered in India under the International Union for Conservation of Nature (IUCN) Red List criteria. This classification reflects the significant threats it faces from habitat disturbance, the impacts of climate change, and other environmental pressures increasingly affecting fragile mountain ecosystems.
Arunachal Pradesh: A Biodiversity Hotspot
The rediscovery also underscores the immense ecological importance of Arunachal Pradesh, a region that forms part of the Eastern Himalaya—recognized as one of the world's richest biodiversity hotspots. Many of the region's remote valleys remain largely unexplored scientifically, suggesting that other species thought to be lost or locally extinct might still persist in these isolated mountain havens.
For conservationists, the return of Cyananthus hookeri serves as both a testament to nature's resilience and a stark warning. Its continued survival now critically depends on robust protection measures for the fragile alpine landscapes where these fewer than 50 known plants have, after nearly 160 years of silence, bloomed once more.