TY - JOUR T1 - Phylogeny and Evolution of Ferns (Monilophytes) with a focus on the early Leptosporangiate Divergences. JF - American Journal of Botany Y1 - 2004 A1 - Pryer, K.M. ED - Schuettpelz, E. ED - Wolf, P.G. ED - Schneider, H. ED - Smith, A.R. ED - Cranfill, R. VL - 91 IS - 10 ER -