Why in the News
According to The Hindu (26 May 2026), a rare wild relative of the blueberry, Vaccinium piliferum, has been rediscovered in the remote forests of Vijaynagar in Arunachal Pradesh's Changlang district - about 188 years after it was first recorded in 1836 (this interval is the authors'/reports'). The discovery was made by researchers and associates of SEED and CSIR-NEIST; according to press reports (citing the researchers) the field collection took place in October 2024 - the 188-year interval runs from 1836 to 2024; the paper was published in 2026.
Vaccinium piliferum
Rediscovery; Ericaceae (the blueberry family)
Location
Vijaynagar, Changlang, Arunachal Pradesh
History
1836 Griffith (Mishmi) -> rediscovery after 188 years
Diagram: original table.
What Is in the Research Paper?
The research paper is "Rediscovery of Vaccinium piliferum (Ericaceae): An Endangered Species From the Eastern Himalaya Biodiversity Hotspot" (Vinay Kumar Sahani, Subhasis Panda, Dipanwita Banik, Minom Pertin; Feddes Repertorium 137(2); DOI: 10.1002/fedr.70107; published 18 May 2026 per Crossref). According to the abstract, this endangered ericoid species was rediscovered from Arunachal Pradesh's Changlang district after an interval of 188 years; it was first collected by William Griffith in November 1836 from the Mishmi Hills. The paper gives photographs of the flowers and their dissected parts, a detailed morphological description based on field data, and a population assessment of the species for future conservation efforts.
According to The Hindu, the species was found in Vijaynagar's dense forests near tributary streams of the Noa-Dihing river; Vijaynagar is an ecologically sensitive area of rich biodiversity. The field survey recorded only 16 plants (this is an observed count, not the total global population), indicating a fragile population; the IUCN has listed Vaccinium piliferum as 'Endangered'. According to botanists, wild relatives of cultivated berry species are important for climate-resilience, disease-resistance and crop-improvement research. The species belongs to the Ericaceae family, which includes blueberries.
Where Does the Confusion Happen in the Exam?
This is a rediscovery, not the description of a new species - the original 1836 record is from the Mishmi Hills, the rediscovery from Vijaynagar (Changlang); both are in Arunachal, but the locations are different. Chronology: 1836 original record (Mishmi) → October 2024 field collection at Vijaynagar (press citation) = 188 years → paper 18 May 2026 → news 26 May. The count of 16 plants is a press-report figure (observed population, not the total); the abstract speaks of a population assessment, not a number. This is not the cultivated blueberry but its wild relative (Ericaceae). Dates: paper 18 May 2026 (Crossref), news 26 May 2026.
The Direction of Preparation from Past Questions:
The official General Studies Paper-I of UPSC Prelims 2023 included statement-based questions. So prepare the bases of species, location and identification separately. The questions below are original practice, not actual PYQs.
Prelims Style: Practice Questions
1. Based on the abstract of the research paper, consider the following statements:
Statement 1: Vaccinium piliferum was rediscovered from Changlang district after an interval of 188 years.
Statement 2: It was first collected by William Griffith in 1836 from the Mishmi Hills.
Statement 3: It is a new species described in 2026.
How many of the above statements are correct?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer and reason
Answer: (b) Only two. Statements 1 and 2 are in the abstract. This is a rediscovery, not the description of a new species - Statement 3 is wrong.
2. According to The Hindu, where was Vaccinium piliferum rediscovered?
(a) Vijaynagar, Changlang district, Arunachal Pradesh
(b) Tawang, West Kameng, Arunachal Pradesh
(c) Ziro, Lower Subansiri, Arunachal Pradesh
(d) Namdapha, Tirap, Arunachal Pradesh
Answer and reason
Answer: (a). Per the report, the rediscovery took place in the forests of Vijaynagar (Changlang) near tributary streams of the Noa-Dihing; the other options are different areas.
3. Which of the following details is from the press report, not from the research paper's abstract?
(a) The species' first record is from the Mishmi Hills in 1836
(b) The paper has photographs of flowers and a morphological description
(c) Only 16 plants were recorded in the field survey
(d) The paper gives a population assessment for conservation
Answer and reason
Answer: (c). The count of 16 plants is in The Hindu's report; (a), (b) and (d) are in the abstract.
Sources:
Feddes Repertorium 137(2): Rediscovery of Vaccinium piliferum (Ericaceae): An Endangered Species From the Eastern Himalaya Biodiversity Hotspot (DOI: 10.1002/fedr.70107; abstract from Crossref).
The Hindu: Rare blueberry species rediscovered in Arunachal after 188 years, 26 May 2026 (thehindu.com).
Hindusthan Samachar: Rare Plant Rediscovered, 21 May 2026 - field collection October 2024 (citing the researchers).
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