0034-7744 0034-7744 S0034-77442018000100178 10.15517/rbt.v66i1.27815 Mexico Mexico 00 03 2018 00 03 2018 66 1 178 188

1979 69 42-6 1998 1991 78 303-25 1975 65 94-5 1971 1978 1 64-70 1995 85 341-60 1998 17 131-44 1995 85 134-81 1969 62 361-77 1979 71-3 1990 1990 80 113-4 1997 a 39 607-14 1997 b 34 21-30 1998 102 119-27 1980 70 99-110 1986 13 97-103 1975 65 105-20 2001 2004 1995 105-6 1969 19 179-88 1971 37 295-396 1964 59 185-94 PPG I (Pteridophyte Phylogeny Group) 2016 54 563-603 2007 56 355-68 1995 85 205-82 2007 56 1037-50 2007 44 1172-85 1915 108 210-60 2006 55 705-31 1952 2 105-13 1999 105 51-7 1992 1982 1984 59-71