Shukla P.K.Singh S.K.Brunton D.F.Shukla S.K.Patil A.P.Dubey N.K.2025-01-132025-01-13202428444https://dl.bhu.ac.in/ir/handle/123456789/1706The authors discovered a previously unknown population of Isoetes at Badami in Bagalkot district of Karnataka state, India in October 2022 which is determined to be I. bilaspurensis. This represents a new record for the Deccan plateau of Southern India and a significant disjunction from its previously known distribution in Chhattisgarh and Madhya Pradesh, Central India. In light of this additional information a revised, detailed description of I. bilaspurensis is presented. Morphological comparisons with closely related taxa, its conservation status, and the phytogeographic implications of its distribution are also provided. � 2024 American Fern Society. All rights reserved.enconservation statusKarnatakaMorphologyspore ornamentationtaxonomyArticle10.1640/0002-8444-114.2.127