Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.1999.755.758Polystichum squarrosum (D.Don) Fee (Dryopteridaceae-Pteridophyta) from Western Ghats, South India]]>RajkumarS. Dominic ManickamV.S. 3199923On the analysis of the spore morphology of 20 specimens of Polystichum squarrosum (D.Don) Fee, two distinct types of perine is observed. These two variants with no intermediates are treated as varieties.]]>Groombridge, B.,1992pp: 1-327pp: 1-327Dixit, R.D.,19841984Manickam, V.S. and V. Irudayaraj,1992 Pages: 653Pages: 653Manickam, V.S. and S.D. Rajkurnar,1999Mickel, J.T. and J.M. Beitel,1988Pages: 568Pages: 568Rajkumar, S.D.,19961996Tryon, R. and A. Tryon,1982Pages: 858Pages: 858Wagner, Jr. W.H.,1980Botrychium matricariifolium X simplex, from central Michigan.]]>193136