TY - JOUR T1 - On Apogamy and the Development of Sporangia upon Fern Prothalli. JF - Proceedings of the Royal Society of London (1854-1905) VL - 63 SP - 56 EP - 61 PY - 1898/01/01/ UR - http://dx.doi.org/10.1098/rspl.1898.0011 M3 - doi:10.1098/rspl.1898.0011 AU - Lang, W. AU - Clark, G. ER -