Annakkili Amma Research Institute (AARI)

The Discovery of Sheathia meghalayensis   Elaya Perumal & Palanisamy, 2026 The world of phycology—the study of algae—just got a little more fascinating. While marine red algae dominate our coastal vocabulary, their freshwater counterparts, the Rhodophyta, represent an ancient and highly specialized evolutionary lineage. (Photo credit: Dr. U Elaya Perumal, Botanical Survey of India) In a paper published in Current Science , researchers U. Elaya Perumal and M. Palanisamy from the Botanical Survey of India announced a major taxonomic breakthrough: the discovery of a distinct, critically endangered freshwater red alga named Sheathia meghalayensis  Elaya Perumal & Palanisamy, 2026 . (Photo credit: Dr. U Elaya Perumal, Botanical Survey of India) The Background: Filling a Critical Gap in India’s Biodiversity Northeastern India is recognized as a global biodiversity hotspot, yet its freshwater macroalgae have historically lagged behind marine species in documentation. Prior su...