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Botanists from the Botanical Survey of India (BSI) described a new flowering-plant species, Disporum yobinorum (family Colchicaceae), from the forests of Vijaynagar in Arunachal Pradesh's Changlang district, publishing the find in the journal Phytotaxa.
The species is named after the Yobin community — one of Arunachal Pradesh's smallest indigenous tribes, also known as the Lisu in Myanmar and China — in recognition of their support for the fieldwork.
Fewer than 40 individual plants are known, all from a single location in moist, shaded evergreen forest at 1,100-1,500 metres elevation; researchers have recommended it be assessed as Data Deficient under IUCN criteria.
Vijaynagar borders Myanmar's Kachin State and shares its biogeography with Yunnan, China, making it part of a biologically rich trans-boundary landscape.
The IUCN Red List uses 'Data Deficient' for species where there isn't enough population, distribution or trend information to assess their extinction risk — it is not the same as 'Least Concern'; a DD species could later turn out to be highly threatened once more data is gathered.
Simple Analogy: It's like an 'incomplete' grade rather than a pass or fail — not enough evidence yet to say how the species is really doing.
GS Paper III > Biodiversity, Species Conservation, Northeast India
General Awareness > Science and Environment
India's apex research organisation for plant taxonomy and floristic studies, under the Ministry of Environment, Forest and Climate Change
A Red List category for species with insufficient data to assess extinction risk