Abstract: The observations by Light and Scanning Electron Micro-scope on the spore morphology of 3 species of Sphagnum i. e. S. squarrosum Peres., S. girgeiisohnii Russ., S. teres (Schimp.) Åongstr. are described in detail. The paper deals with the spore polarity, the structure of trilete, the ornamentation of spore-surface and their significance in taxonomy and phylogeny of bryophytes. The figures of the spores drawn under the light microscope and the photographs taken by SEM are shown in plates.