While analysing the Tertiary lignites from Neyveli (Miocene) and Panandhro (Eocene) lignite fields of India under fluorescence mode, an unusual fluorescing microcomponent, hitherto of unknown botanical affinity, has been recorded. Distinct morphological features and mode of occurrence preclude its inclusion in existing fluorescing macerals of the liptinite group. The paper provides information on petrographic and morphographic properties of the recorded fluorescing microcomponent, besides its significance. (C) 2002 Elsevier Science B.V All rights reserved.