TY - JOUR T1 - Studies in the Morphology of Spore-Producing Members. Preliminary Statement on the Lycopodinae and Ophioglossaceae JF - Proceedings of the Royal Society of London (1854-1905) VL - 50 SP - 265 EP - 273 PY - 1891/01/01/ UR - http://dx.doi.org/10.1098/rspl.1891.0038 M3 - doi:10.1098/rspl.1891.0038 AU - Bower, F. ER -