Context:
Recently, Researchers Barnali Das and Namita Nath have identified a new flowering plant species, Osbeckia assamensis, in Manas National Park, Assam. The findings were published in the scientific journal Phytotaxa on October 22, following extensive field surveys conducted between 2021 and 2025.
Key Features of the Species:
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- Osbeckia assamensis belongs to the family Melastomataceae and is a perennial shrub that grows approximately 2–2.5 metres tall. It produces pink flowers measuring 3–3.5 cm, with around 30–35 flowers in each inflorescence. Its flowering and fruiting period extends from September to February.
- The species resembles the closely related Osbeckia nayarii but differs in morphological characteristics, including stem structure, flower arrangement, hairy calyx margins and seed size. The type specimen was collected from Manas National Park on October 8, 2022, while another specimen was documented in October 2025.
- Osbeckia assamensis belongs to the family Melastomataceae and is a perennial shrub that grows approximately 2–2.5 metres tall. It produces pink flowers measuring 3–3.5 cm, with around 30–35 flowers in each inflorescence. Its flowering and fruiting period extends from September to February.
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About Manas National Park:
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- Manas National Park is located in Assam, along the foothills of the eastern Himalayas, bordering Bhutan. It was designated a UNESCO World Heritage Site in 1985 and forms part of the Manas Biosphere Reserve. It is also recognised as a tiger reserve and an elephant reserve.
- The Manas River, a tributary of the Brahmaputra, flows through this landscape. The park comprises tropical forests, alluvial grasslands and riverine ecosystems, supporting rich biodiversity. Important fauna include the Bengal tiger, Asian elephant, Indian rhinoceros and golden langur.
- Manas National Park is located in Assam, along the foothills of the eastern Himalayas, bordering Bhutan. It was designated a UNESCO World Heritage Site in 1985 and forms part of the Manas Biosphere Reserve. It is also recognised as a tiger reserve and an elephant reserve.
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Ecological and Scientific Significance:
The discovery demonstrates the importance of systematic botanical surveys, taxonomic research and herbarium studies in identifying previously undocumented species. It improves scientific understanding of plant diversity and highlights the ecological significance of grassland habitats, which support specialised plant communities and wildlife. Such discoveries can also inform conservation planning by identifying species whose distribution and ecological requirements need further investigation.
IUCN Conservation Status:
The researchers have categorised Osbeckia assamensis as Data Deficient (DD) under the International Union for Conservation of Nature (IUCN) criteria because it is currently known only from its type locality and sufficient information is unavailable to assess its extinction risk. Data Deficient does not necessarily mean that a species is threatened or safe.
